All these complaints about tanks pulling too little or healers not dpsing seem kind of weird to me. I have yet to see them. I have ran quite a few dungeons without dpsing because I felt it was too risky with the party I was in. I have also played on 2 data servers. Only once have I been asked by someone to contribute more DPS, but when I explained I was having some latency issues and didn't want to let the tank die they were fine with it and understood. Even when I level tanks, I have been given advice, not complaints. Maybe I have been lucky, but I really feel like people are either exaggerating the problem or taking things the wrong way.
That being said, I think they should really consider changing regular dungeons to be 3 dps, 1 tank, 1 healer and increase their difficulty to match. They designed this game to have 3 times the dps as it has healers or tanks and they should have the dungeons reflect that to help ease the queue times for the people who main dps classes.
