There used to be a system where you could tip people mana for good comments, and it would show up on the comment how much it had been tipped, like with a Bounty.

Currently you can tip people for their comments, but it just sends them a managram and does not publicly signal that the good comment was rewarded. So personally I think they should go back to showing how much each comment has been tipped.

I have many other more complicated suggestions for comment incentives, but I think this is an easy win. Staff has seemed to be in favor of the idea when I've brought it up, but I understand there's a lot of other stuff to do too.