First, I'd like to point out that heliocentric sounds interesting—when you take into account it represents objects encircling the life force of the solar system.
However, suggesting that a geocentric belief system is what caused the initial interpretation of astrology to begin with is not the case—just because you can equate a geocentric ideology with a marking of celestial positions in the sky encircling the earth the day you were born does not merit the idea that the positions these objects are in, relative to your physical body, are somehow untrue.
Astrology is a mapping of the rhythms the various placements of gravitational and energetic patterns imprinted into the evolution of life on earth; when you are mapping an astrological body to a particular constellation, it is higher art form of the superconscious species—the spirit manifest. Here the subconscious and soul begins to orient itself to the patterns and stories being told; first by subjecting itself to studies, interpretations, myths, ideas, and actual patterns with facts. Secondly, it subjects itself to living tales, tries and truths, and the explosion of practice. Thirdly, it initiates systems which themselves become their own form of art—or a fashion of personality ... A fashion of meaning, purpose, and the soul. And finally, the evolution and progression of ideas within these systems become opportunities for the spirit before entering into this realm via the cosmos—subjecting itself to the subconscious art and styles of the species itself.
I would say, living in the west, a man is subject to three systems: One, a local, ancient system nearly superficial but deeply powerful. You could call this tropical. Two, a man is subject to a global system, more accurate and in rising above to modern times. This more of who he actually is, although he possesses and embodies both. The dominant signs themselves become like cosmic genes of sorts, intermixing and overlapping at times the weaker signs. As with the eye color of the physical body, a recessive blue with a dominant brown will be expressed Blue under Brown; when you laser the brown layer of cornea off, your eye will appear blue underneath. It is the dominant pattern which is the ultimate image and power. Or with skin color, they tend to just blend.
I'm sure you can imagine all sorts of beautiful expressions and magnificent cosmic patterns, just as some black people are born with bright green eyes, sometimes the cosmic gene pool of signs expresses strange, abnormal beauties.
Still, sidereal itself is out of date—and you'll find there is also a much more accurate method of discovering the true placement of astrological bodies. The title? Good old astronomy itself. There is an astronomy website which outlines the boundaries of each constellation and displays the moon, planets, sun, and stars in their rightful positions relative the viewpoint of earth given the date and time you input along with your latitude and longitude:
http://www.fourmilab.ch/cgi-bin/Yoursky
Using realtime astronomy will give you the universal aspect of your cosmic self. There are some humans whose souls are explicitly local—the global and universal chart is weak for them, so they stick precisely to western tropical zodiac because that is what they are able to comprehend. There are some humans which are strictly global—they deny western and universal; they need order and they need a system ... yet they believe in a more accurate or eastern philosophy, so they identify sidereally. Then there are those who are universal—they know the true placement of objects and are concerned about it. They realize the patterns in collective consciousness and accept all the systems, delving into them and appreciating what each one truly says about their selves. They know that whatever they choose to express, who they choose to become, or what creations they spread on this planet will all be born from those energetic powerhouses beaming within the rhythms of the galaxy and far beyond, outlined in the constellations.