People abusing party in progress option

[Craiger]

I would join, kill the current boss you are on then leave. I rather like this idea.
Hope you see the flaw here.

Well I'm not the one who should be coming up with the ideas, that's SE's job But they could probably implement a system that does something similar, but stops people from doing what you said.

You would get 15min penalty if you leave and you would still get less tomes for the boss then you would if you did the whole dungeon... So I don't think it would be worth it anyways....