That's one of the ideas I've had. But I've noticed that not all of my opinions are shared by others; for instance, I genuinely get a Uranus feeling from the Tower, in the "pop culture" sense of chaos breaking out all over the place, but most people correlate it with Mars. In turn, I liken Mars to the Emporer, because that planet's "masculine" energy seems like a good compliment to Venus for the Empress. (Maybe Mars trine Jupiter is a good way to describe the feeling.)
Another problem I'm having is that I'd like to use comparitive mythology in my deck also, AND runes, PROBABLY some Qabbalah, and MAYBE the I Ching - all things that I'm just beginning to study. I'll most likely end up creating several decks, one for each "theme", and then meditate on how to combine them into a final magnum opus.