The question that comes to mind: what constellations? Whose idea of what constellation has been viewed. Because stars can be viewed in any number of ways and patterens. Many stars may not be included. Who makes that decision. Isn't it somewhat arbitrary what we see in the sky? I may see a cat where you see a scarecrow.
For me the tropical view is much more descriptive of the people I have met and their 'sections' of the Sun's path as a description of personality traits.
That may be a basic point. That is, the chaldean astronomers/altrologers created rules, determined from their insights, which cannot be exported 'as they are' to the recent sidereal model.
Ptolemy wrote clearly that the tropical model, as Steve already reported, is but a conventional subdivision of the sky and does not consider the equinoctial precession because that's not a factor of interest in that particular model.
Again, this is not my arena, but it is clear that tropical and sidereal astrologers are often in disagreement.
Probably, a recent sidereal model should be based on the principles of Vedic classic astrology update and expanded.
I've no idea if there is someone who is currently able to do that.
