This is for ALL queues (not just the high level ones) because people leave things like Lost City, or Pharos all the time too. DPS already have huge queue times, so it really hurts them to have to do it 2-3 times before a group actually stays.

I would suggest the way to help resolve this is HUGE lockouts for people that leave a group say in the first 15 minutes. When I say HUGE I mean like 2 hours before you can run ANYTHING (queue or not). This would stop tanks, healers, and yes even some dps from leaving groups on dungeons they don't want to do (don't queue for a roulette if there is something on that list you don't want to do!)

I say a huge penalty cause right now with 30 mins, you can go have a snack and watch and episode of Futurama and come back and it be over. The Penalty needs to actually MEAN something.