I think this is a great idea!
And furthermore... I wonder if there's something to the idea of a bit of anonymity to rewarding... If a problem is bots, well, would people use bots if they couldn't be sure if the bot was actually voting for them? I dunno, it needs some workshopping, but to some extent, should we perhaps not be able to tell where a post got its rewards from? We either think "yes, good post, I will also reward it" or "no! this post is getting more than it deserves, I'll redistribute some of those rewards."
Hmmmmm. What are the negatives? That abusers can hide behind anonymity? In what way does that benefit them? As it is, they are known and it doesn't seem to help. Hmmmmmmmm....