Nothing you do is going to keep people from leaving roulette choices they don't like. If you make the penalty too harsh, people will simply find another way around it like disconnecting or sitting down and doing nothing while demanding that the group kick them. I think a 30 minute penalty is fine and it is working as intended - it prevents people from spamming it until they get a choice that they like. 3 hours is unreasonably long; many people don't even play this game 3 hours a day. If someone's bent enough that they want to leave an instance, by all means let them leave and we'll get a replacement that actually wants to be there. I don't want to be stuck in an instance with someone that doesn't want to be there anyway. Those are the people doing shitty 1-2-3 DPS rotations or spamming one heal key while watching Netflix on their other monitor or something.