Nix the free flags.
Put the flag back where it was.
Remove the downvote button.
Call the upvote button a reward or tip button.
Create on the condenser-level Reddit style buttons.
I call these buttons up sort and down sort.
They allow one equal vote per post and IP address.
The up sorts and down sorts are anonymous.

100% this.

Downvoting or downsorting a post or comment should not affect other comments or posts by the same account.