They are capable of removing all traces of bones and buildings etc., from Earth, just by wishing it. This is the slogan in some offices up in the heavens. They can do it, and they do, and they have the will and divine mandate to do so. However, Krishna also comes from time to time to reveal the real truth, and for those who have the ears for it, it's very welcome information. The northern chart looks Arabic, whereas the Yantra looks Vedic, but the Southern seems completely utilitarian, easy, quick, direct.
Vedic things are usually very beautiful where possible, and although symmetrical, uneven.
I am thinking that for those who used to have to do the kind of math that planetary calcualations, shad bala, etc., are, for the human to do manually, well, in old times, the people with this kind of training and ability, would likely have very prominent Mercuries, and such persons are more into facts than beauty, and thus they could care less about the look of the chart, except that it be highly functional and to the point for the kind of astrology they did. When I first wrote my program, I used only the Yantra, that's the Star of David inside a circle, like on the cover of David Frawleys book. Well, I immediately found out that beauty and Vedic things weren't being used in the astrology books or by the Jyotishis around, and so I had to add these other, much uglier chart types, which indeed I had seen in the books, but I figured everyone would switch to Yantra as soon as I offered it. Interesting that charts are being drawn in ugly box like forms when indeed the Universe is roundish by orbital patterns of the Grahas, and there are no clean lines visible anywhere in space. Sounds like Human limitations stepping in to me.