Below are charts for Sunrise and Noon created in three different formats. Notice that the Western astrological chart format, below, conforms most closely to the astronomical reality of the visible sky in the top half of the chart, and the Sun culminates at Noon at the top of the chart.
On the other hand, the North Indian Vedic chart format is identical except that the First House is depicted at the top, representing the head of a person standing up.
The South Indian chart differs completely from the other two formats, emphasizing the signs over the horizons. For every South Indian chart, the top square on the left is the sign Pisces, and to the right of it is Aries, etc.
If astrology charts were to portray planets more accurately, retrograde planets would be shown as larger (and brighter) because they are closest to the Earth, combust planets would be shown only by a faint outline (because they are actually invisible to the eye), the glyph for the Moon would change to show its actual phase, and Chiron would have a tail (because it's actually a comet).
While some of these ideas may seem a bit unusual, in fact they would remind astrologers that retrograde planets are stronger, combust planets (and the houses they rule) are weaker, and the nature of the Moon in a person's chart is greatly modified by its phase.
As aforementioned, both astrology and astronomy programs offer Planetarium features, but those in astronomy programs are much more feature rich. That's why the creators of Solar Fire Gold linked Solar Fire with the astronomy program Stellarium version 0.9.1, so that astrologers could quickly see a full-fledged Planetarium view of any birth chart:
Some of the internal planetaria built into astrology programs are:
and Solar Fire's internal planetarium:
All of the internal planetaria are useful, and can even be animated, but they are just not as extensive as a program like Stellarium.