The party dungeon system should be revamped.
I cannot tell you how many times I have started a FOTM or a dungeon with someone else who opened. At some point they either disconnect or get mad at someone in the group and quit.
This WIPES the whole group from the dungeon, losing all progress.
Instead of kicking the troublemaker, the person who opened quits. This can cause a whole hour of my, and 3 other peoples, time on GW2 to have been wasted.
If a player who is not the opener leaves or is kicked, you just find another person and continue on. What is the rationale for removing the remaining members of the party and making them all start over?
Can you please have the dungeon and FOTM system jump to a new host when the leader quits? Almost every other game I can think of has something like host jumping in place to keep the whole party from being kicked out mid dungeon.