Since content finder will be one of the major ways people do content in ARR there is bound to be a few problems that pop up with it. I can see one already.

In WoW which has dungeon finder there is a big problem with people not wanting to take on the responsibility to play tanks and healers, they rather play mindless dps. So if your a tank or healer you get a instant queue really fast. While DPS have to wait like 30 min. So Blizzard started bribing people with bonus bags that had a lot of gold, food, potions, mounts and pets if they successfully beat a dungeon as a tank or healer. So now it only takes 8 min for dps to get a group.

So devs fix the problem before it happens in ARR. Give the tanks and healers a bag with extra gil and chance a rare mount for queuing up in the content finder. It will reduce queue times for those dps players by a lot. Win-Win for everyone.