I think that is a good idea. That will be a real time payout in terms of user action instead of being centred around content. But this would add a lot of over head in terms of calculations and I don't think we are ready yet. This might be the case if the computing power increases by another couple of orders ;)

Again I don't like cat posts but I had to upvote it because of this insightful comment of yours.

An AI that analises our data couple of years ahead might infer that I like cat posts but whereas I was just trying to make sure that this comment of your gets rewarded.