Please Overhaul Dungeon Rules
I love this game but i'm not having fun lately and that's 99% because of roulette groups. Your rules are incredibly restrictive on kicking--long cd; not during combat; not while a chest is open (which some trolls obviously abuse to get a whole dungeon's worth of immunity)--and on leaving--30 minutes no matter how far you've gotten, how much time has elapsed, or how many wipes have occurred. You can even get penalized if you're not the first one to leave (no idea how this even works).
I'm not going to clog this with anecdotes but--bottom line--if I want out of a group for whatever reason I can: a) take a 30 minute time-out; b) go AFK until I get kicked and not get a time-out. That's stupid.
I think I'm just going to stop doing roulettes until you make some serious changes because it's sucking all the fun out of the game for me.