I do not have any problems being kicked from runs. I tank, DPS and heal while DPSing, and while I have seen people with poor attitudes, I usually run with at least enough friends to remove anyone who is being toxic to the party.

Personally, I don't kick bad players that don't do a certain amount of DPS, or won't DPS as a healer or pull everything as a tank. I don't really care that much.

I will kick for the following:
  • Poor attitude and being hostile
  • Cheating the ilvl system by wearing inappropriate accessories

That is about it for me. All I ask is that you try to do your best, even if <500 DPS in a 60 dungeon is your best, and don't be a jackwagon.