I am not a fan of downvotes in general. But if it imporves steem economics probably is ok.

I mentioned this somewhere else. Would you be able to pass this on to UI team if you find it interesting?

It would be nice to have a “tip” or “gift” button for posts, so users could give authors additional rewards. I know anybody can transfer from wallet. But having this feature on posts might encourage rewarding authors without solely relying on reward pool. It would also develop a gifting culture.

P.S. With tips or gifts content can even be rewarded after 7 days.