I think excessive use of quotes should be punished. People don't even bother to remove all previous quotes and just make a whole thread hardly readable. Need to send this person to Read-only, for a week, so he'll miss stakes for that particular week. That might send a message to the user, 5 warnings in a row could lead to the permanent ban.
First actionable post in the thread. I like this one. Placing someone on a read only ban will financially incentivise the signature campaign runnin-shitposters of the world to knock it off regardless of what a bounty manager's enticing them with (to an extent) and it will be more of a risk to run around shitposting and quoting everything that pops in their head.
Even just placing them back at newbie or jr member status for a few weeks or so would do the trick.
Oh or taking merit for violations of some sort... Ive always thought that would be a good punishment system. Just take the existing reward system and integrate a disciplinary system into it.