Hi, I try to stay out of this particular forum as for the unorthodox, non-traditional form of Astrology I practice but I couldn't help but become intrigued by the configurations you have in your natal chart. I have a Harmonic/Mystic rectangle and a Grand Cross incorporated in my own natal chart.
You definitely have a Harmonic Rectangle although I place the point in Sagittarius in the 6th degree being the midpoint between the N. Node and Neptune. Most of the Traditionalists will probably say there is no conjunction there between the two but from much experience dealing with various matrices in natal charts I have found that what appear to be incomplete or weak points such as the one you have there are made stronger by the focus of the other astrological influences. Picture an old fashioned distributor on a carbureted engine and one of the points being a bit askew. the engine does still fire and run, albeit not as smoothly and efficiently as it would in that one point were perfectly aligned. When transiting influences do pass through that 6th degree, watch out, you're firing on all four cylinders and have got your self some real get up and go horsepower.
I find your Harmonic Rectangle of particular interest, though, as for the fact that one of these rectangles is a potential Grand Sextile aka a Star of Solomon {Magen David some will prefer, especially our Jewish friends}. When there are two influences transiting over the 7th degree of Aquarius and Leo {please note that your Sun is in the 7th degree and Mars in the 6th by proper Zodiacal degree nomenclature. The degrees are numbered one through thirty, not zero through twenty nine, as is often the misunderstanding} Those two degrees in Aquarius and Leo just happen to be the placement of the North and South Nodes of the Moon in the natal chart of the United States. They also happen to be the placement of my natal Moons' Nodes, except that mine are reverse that of the U.S. They are also two prominent degrees in a number of natal charts that belong to some personal friends of mine. The USA's North Node is in Leo and {...I really hate to breach this subject in this particular sub forum, but here goes...I will keep it minimalist...} as I am an astrologer that works with and places a great deal of emphasis on the Sabian Symbols, I will tell you this about that degree in Leo and the one in Aquarius, they are very powerful symbols. For one thing they do heavily influence us Yanks and the symbol for the one in the 7th of Leo is of constellations in the night sky and is about enduring archetypes. The one in Aquarius is a symbol of a person being born out of an egg, the Hiranyagarbhaya {Sanskrit} as the late, great, 20th century astrologer, Dane Rudhyar like to identify it as. It's a symbol of the birth of global man. So don't get that mixed up with what some of our politicians are promoting as "the New World Order", it is of the American past not our future...as I keep trying to tell everyone.., those that emerged at the time that founded this nation.
It's been awhile since I worked with his chart but I'm pretty sure that I remember it happens to be where former presidential candidate Mitt Romney's Part of Increase and Benefits is. The 7th of Leo on the other hand happens to be where Barrack Obama's Part of Increase and Benefits is.., but unfortunately for us Yanks it also happens to be where Bill Clintons Part of Innocence or Naivete is also and as the North Node indicates where ones' relationship to prevailing social trends lies and ones attitudes and use of opportunities, and especially where opportunities for increase lie, Bill Clinton's naivete to the precept indicated by the symbology of that degree led to his getting this nation into NAFTA which has killed the economy by putting an entire generation mostly out of work and destroyed the guilds as trades knowledge was not passed from one generation to the next. So when there are transits over those two points simultaneously by transit but especially if it should happen by natal chart progression, what you have is a very active Grand Sextile for a spell and that matrix is the matrix found in the natal charts of people with the right idea and the management skills to implement them and they have the ability at organizing the work force needed and the management skill to motivate them and get it done.
Now, it is not a life long aspect from there after but one of great opportunity for a period of time and if by progression it will be an extended period of time.
I have Pluto and Neptune involved in my rectangle too, but I also have the Moon, Saturn {conj Neptune} and Venus and Mercury {conj. as like your Neptune and N. Node} My Moon is also exactly conj. my I.C. and Pluto within a three degree conj to my M.C. Thus I have a knack for being intuitive as to implementing transformative spiritually aligned projects and ideas and the ability to communicate to others about them. What I see in your rectangle is somewhat along those same lines, only more oriented towards philosophy, brotherhood and growth in all areas which is due to the Jovian influence and with that Sun [Ego] and Mars [physical drive and desire] involved you could be a real powerhouse in something that will incorporate all those planetary influences.
Why I got so into explaining about those politicians and the USA chart is that you may have some sort of rapport with American society in that as an outsider, but one whom is a product of a British originated society like our own, what you may have to communicate, if writing or acting is for you, could go over real well here in the States. You may have a keen eye for what our country needs to know or hear.
I calculated for your Part of destiny and it comes out to be at 23* Sag. 09' which has the symbolism of the bluebird of happiness perched on a cottage gate, The bluebird is a symbol of happiness, but also it refers to what one might call a spiritually oriented mind as to which the color blue relates, especially when a 'bird' is mentioned. A cottage is normally a part of a community, and the implication is that its inhabitants are well-adapted, either to the life of the community, or to their’ more or less isolated togetherness.
Your Part of Fortune in the 29th degree f Taurus is dealt with a rather difficult symbol for many, myself included, to interpret but it also happens to be the Part of Hyleg for the USA and it is a symbol of two cobblers working at a table and basically, as feet symbolically represent understanding , what is implied here is that you will produce your most fortuitous circumstances when you utilize your mind, your understanding of the two fold nature of things as it is impossible to fully understand anything except when its opposite is taken into consideration what that gives you is the ability to gain perspective and a true perspective becomes the foundation upon which to build a new approach to life.
The symbolism for your North Node is about [and I will quote Dane Rudhyar here, from his book "An Astrological Mandala", which covers the 360 different degree symbols] "...but the type of abstract or religious thinking normally related to the zodiacal sign, Sagittarius, also implies a special kind of 'fire'. It is a fire that burns the 'now' of natural living in order to build a greater 'tomorrow', It is future-oriented It aspires to produce a
greater, wider civilization, even though it finds its roots in the harvest of mankind’s past. Comradeship and group activities are implied, but the togetherness is one of fighting spirits."
So given that you have that Harmonic Rectangle here, what with Jupiter, Neptune and Pluto... the dream you have of transforming the world into a society built upon a philosophy of brotherhood and cooperation that grws greater and greater almost effortlessly, that is what you should be putting your energy into, whether it be writing or acting or whatever the other members here, like Kimber Moon has suggested, as I'm not as adept as figuring that out as members such as the likes of her... what I do best is determine and explain what the divine precepts that one is oriented towards are.
The Grand Cross you thought you had is but only a 'T Square' but I have a few threads on how to work with and resolve those. Basically you have to determine where the focus is and try to implement the symbolism found for that degree the focus is on. For you that is likely the 16th degree of Libra and what that symbolically indicates ...and I will quote Rudhyar one more time...[ibid.] "The need to keep in operation steady links between the vast Unconscious and the ego-consciousness ... be wary of the danger inherent in venturing far away from the consciously defined and socially structured ways of life. Such adventures may indeed turn destructive."
So that dream of transformation of society you likely have, you need to remember to "keep it real", as we Yanks like to say. Don't drift out too far from shore. Pace yourself and give your self planned periods of rest in any venture or task you take on. That will keep you centered.
If you wish to know more about Sabian Symbols and how to implement them and integrate them into traditional astrology, may I suggest getting to know one of your fellow Aussies, Lynda Hill. She is on facebook, has a twice monthly email newsletter and does natal chart reading and can provide any coaching or such if you feel a need to seek such out. She is a lovely person, whom I've never met personally but have been in correspondence with for the last eight or nine years. She has the accolade of being the worlds living authority on the Sabian Symbols. {I say "living" because, personally, I believe Rudhyar to have been the greatest ever but we will probably never see the likes of anyone as like Dane again....but please don't tell her I said that, if you do so happen to look her up, thanks.}
Good luck to you and may God Bless. ptv
p.s. you have got some strong quintile action going on in your chart. Don't necessarily count it out that there isn't such an influence between your Moon and Uranus as they are both bi-quintile to your Sun and that matrix just might fire up once in a while from transit influences and progressions. Also I noticed that you have all the players from your Harmonic Rectangle involved in quintiles every which way except for Mars and Pluto, awesome. Look for semi quintiles and tredeciles [aspects of 36* and 108*] astrodienst won't point them out, you have to search for them your self. The are quite auspicious as to what they provide and I noticed that you have a Sun-Saturn novile and a Jupiter-Sun septile... I've never seen a set up like that before, you should probably look into that.
I said enough, I probably have invoked the ire of a few of the traditionalists at this point, so I must go.
Cheers!