But there's all kinds of issues. How do you display them all (especially if you exceed 2 sets of arrows)? How do you remember which one is which (again, not a huge issue if you just add one more karma type)? How much will having to sort by several karmas slow down the site?
Not to mention the obvious question... is there really a point to breaking everything down seven ways from Sunday?
At that point it becomes a video game, and loses any semblance of meaning anything whatsoever.