As a healer, I encourage the tank to never stop pulling and to go nuts, as well as the DPS. It's fun for me and for everyone else, while also speeding things up. Nobody ever dies, nobody ever complains, and everyone generally has fun. I don't think I've ever heard a complaint. When I'm tanking, if other people pull I'll grab the mobs and get threat, because that's easy as piss. Again, it gives me something to do outside of the mundane dungeon I've run several times. On a DPS, I'll only pull if I'm fully capable of handling myself whether the tank gets aggro or no. Yes, I play the game for me instead of random people I'll never see again. In a raid or a premade group clearly it's a group effort, but when you're talking about five mans thats a complete joke. If a tank specifically says he is new and may struggle, I'll deal with it and allow him to go at his own pace. If you have an issue, say it, otherwise suck it up.