Copy the opr punishment system for leaving and apply it to mutated dungeon so when you leave your group mid dungeon you won’t be able to play new one for 30min or even more. I’m so sick of people leaving just because the run isn’t as smooth as they wanted to. I’ve experienced it many times on harder mutations like this week - hellfire tempest. Today I had a situation where a healer and a tank decided to leave after being killed in the middle of a run (Fire ghost in Barnacles), wasting the time of the rest of the people and the entrance, even though it was still gold.
Please, make something about constant dungeon leavers which ruin runs for the rest of us.