I'm sure this has been suggested before, but there needs to be a kick function in parties and dungeons. I've been trying to complete CM on Famfrit server, but there is this one tank that always AFKs once CM starts, I assume its to get free tomes. A vote to kick would have saved me and multiple other players a lot of grief by being able to kick him, rather than having everyone leave the dungeon and requeue in the DF.

For the content that does not let you add more members obviously turn off the kick function. But for content that does, make so if 75%(or whatever the best number would be here) of the party votes to kick the player then he/she is booted and at the same time make it so they cannot rejoin the party by using the Join Party in Progress feature.