the need for 3rd tank class

[Duelle]

I would tank except for:
1. I don't like elitists and other rude players.
2. I don't like rushing through crap.

Then don't rush through stuff. The tank sets the pace of the dungeon run, and with how long it takes to replace a tank, smart players are not going to argue with you. The dumb ones will kick you from the group, at which point you can get an insta-queue into another group while they sit in the dungeon for 45 minutes waiting for a new tank to pop up.