I managed to get some time to catch up on the upcoming patch 4.1 changes and came across something that is supposed to help us get lower queue times in the dungeon finder tool. What they are saying is they will dish out extra loot/incentives to classes that are under represented in the queue. Which we all know will most likely be tanks and healers. I do see some problems with his but it may work out to reduce the queue times. The following Daily Blink comic is what came to mind though.
It helps illustrate the problem I see with this. I've healed enough bad tanks(or tanked for bad healers) to know it will just simply make things worse but who knows, I might be impressed. Time will tell.