Since you can make money by giving your opinion, make you think twice before say something. A reputation system that show how people value your opinion, using sats/comment could be a killer feature. The more the people value your comments, the more you post stay at the top.

Of course could be used to pay for fake good reputation, but since you are paying should have a limit.

Also extremist people would be better at getting extremist people giving money to them. Still a nice feature that could be useful to see in action.