I believe that the long established (Western) dignity/detriment model was developed upon the framework of 12 signs and 7 planets, and that this model works perfectly well within the context of the Hellenist and Traditionalist whole system models. I also question the practicality of attempting to fit other cosmic factors (the outer planets) into that specific model. However, concepts such as dispositorship-like influences, elemental qualities, etc can be applied to these other cosmic factors (the outer planets), although upon an experimental basis (until several hundred years of such uses, and the collection of results from such uses, have been accumulated)...
I use such considerations (dignity, detriment as traditionally defined) only as secondary, modifying factors, and I have borrowed from ancient Vedic astrology the evaluative method called ashtakavarga (8 sources of energy) in making my primary estimations of how well each planet (or sign) will be enabled to express its specific nature and influence, ie, if a sign or planet is in fact "dignified" or "detrimented" (to use more familiar terms)
I will present the following Modernist allocation of (traditionally understood) sign, triplicity, sect, joy, term, face affinities of the outer planets: these affinities are followed by a certain group of esotericists I know, in their various astrological delineations, to make their determination of "dignity and detriment" in chart analysis. I present this material without further comment, and perhaps its will be of some interest to AW members following a Modernist astrological approach:
Note: the following allocations clearly are based upon the concept of Pluto being similar to Mars, Neptune being similar to Jupiter (which is somewhat different than most Modernist opinion, which usually makes Neptune similar to Venus), and Uranus being similar to Mercury.
ELEMENTAL ALLOCATIONS
Pluto: Fire + Earth
Neptune: Water
Uranus: Air
SIGN AFFINITIES
Pluto co-domicile in Scorpio (Mars primary dispositor of the sign)
Neptune co-domicile in Pisces (Jupiter primary dispositor of the sign)
Uranus co-domicile in Aquarius (Saturn primary dispositor of the sign)
Pluto: detrimented in Taurus; falls in Cancer; exalted in Capricorn (similar to Mars)
Neptune: detrimented in Virgo; falls in Capricorn; exalted in Cancer (similar to Jupiter)
Uranus: detrimented in Leo; falls in Pisces; exalted in Gemini (similar to Mercury, except that Mercury is exalted in earthy Virgo)
TRIPLICITY AFFINITIES:
Fire Triplicity: day + night co-participant = Pluto
Air Triplicity: day + night co-participant = Uranus
Water Triplicity: day + night co-participant = Neptune
Earth Triplicity: day + night co-participant = Pluto
SECT:
Pluto = nocturnal
Neptune = diurnal
Uranus = both (like Mercury)
JOYS:
Pluto in 6th house (sorrows in 12th house)
Neptune in 11th house (sorrows in 5th house)
Uranus in 1st house (sorrows in 7th house)
PLANETARY ORBIT SCHEDULE
(clearly an extension of the original Chaldean Order)
Pluto
Neptune
Uranus
Saturn
Jupiter
Mars
Sun
Venus
Mercury
Moon
....then back to Pluto
FACES:
Aries: 0-9= Mars; 10-19 = Sun; 20-29 = Venus
Taurus: 0-9 = Mercury; 10-19 = Moon; 20-29 = Pluto
Gemini: 0-9 = Neptune; 10-19 = Uranus; 20-29 = Saturn
Cancer: 0-9 = Jupiter; 10-19 = Mars; 20-29 = Sun
Leo: 0-9 = Venus; 10-19 = Mercury; 20-29 = Moon
Virgo: 0-9 = Pluto; 10-19 = Neptune; 20-29 = Uranus
Libra: 0-9 = Saturn; 10-19 = Jupiter; 20-29 = Mars
Scorpio: 0-9 = Sun; 10-19 = Venus' 20-29 = Mercury
Sagittarius: 0-9 = Moon; 10-19 = Pluto; 20-29 = Neptune
Capricorn: 0-9 = Uranus; 10-19 = Saturn; 20-29 = Jupiter
Aquarius: 0-9 = Mars; 10-19 = Sun; 20-29 = Venus
Pisces: 0-9 = Mercury; 10-19 = Moon; 20-29 = Pluto
TERMS:
Each sign is equally divided into 10 terms of 3 degrees each. The first term of each sign begins with the dispositor (primary dispositor) of that sign, then each following term is of the planet next in order in the Planetary Orbit Schedule (note that these "terms" include the Sun and Moon, which is like the ancient monomoiria planetary allocations of the West, and the triamsha varga allocations of Vedic astrology)
ARIES: Mars-Sun-Venus-Mercury-Moon-Pluto-Neptune-Uranus-Saturn-Jupiter
TAURUS: Venus-Mercury-Moon-Pluto-Neptune-Uranus-Saturn-Jupiter-Mars-Sun
GEMINI: Mercury-Moon-Pluto-Neptune-Uranus-Saturn-Jupiter-Mars-Sun-Venus
CANCER: Moon-Pluto-Neptune-Uranus-Saturn-Jupiter-Mars-Sun-Venus-Mercury
LEO: Sun-Venus-Mercury-Moon-Pluto-Neptune-Uranus-Saturn-Jupiter-Mars
VIRGO: Mercury-Moon-Pluto-Neptune-Uranus-Saturn-Jupiter-Mars-Sun-Venus
LIBRA: Venus-Mercury-Moon-Pluto-Neptune-Uranus-Saturn-Jupiter-Mars-Sun
SCORPIO: Mars-Sun-Venus-Mercury-Moon-Pluto-Neptune-Uranus-Saturn-Jupiter
SAGITTARIUS: Jupiter-Mars-Sun-Venus-Mercury-Moon-Pluto-Neptune-Uranus-Saturn
CAPRICORN: Saturn-Jupiter-Mars-Sun-Venus-Mercury-Moon-Pluto-Neptune-Pluto
AQUARIUS: Saturn-Jupiter-Mars-Sun-Venus-Mercury-Moon-Pluto-Neptune-Pluto
PISCES: Jupiter-Mars-Sun-Venus-Mercury-Moon-Pluto-Neptune-Uranus-Saturn