I’m okay on the idea in principle, but given the adversarial nature of some forum factions here, it would be rapidly abused I think.
Maybe if people were limited to making 6-10 new posts per day, and no more than 2 new topics, and had a pool of only say 10 up/down votes per day to work with, it could be a meaningful mechanic. Although then, as DMC said, you’d just get people gaming it with alts.
Then would come the vote-farmers, and the bots, and the AFK voters, and then where would we be? RMT for upvotes, that’s where!