Thanks for pointing that out. It's not a duplicate request, though--having multiple images for a given token is an interesting idea, but not what I'm looking for. You can already orient top-down tokens in various ways, but I find that I have to look pretty hard at a top-down picture in order to figure out (a) what it represents and (b) where it's pointing (unless it's something like a spider or an ant, which I am used to seeing from that angle). It's especially bad if the token is small or the background is at all busy.
When it comes down to it, I want to choose tokens based on whether they have distinctive character and look neat, rather than whether players can tell, without difficulty, which way they're pointing, and for that I need some kind of facing-indicator that can be stuck on any token.