IMO, RDM is the easiest DPS in the game by a long shot. The very simple priority system and non-punishing mechanics make it very easy for newer players to pick up and do well with. There is one downside though. RDM is pretty terrible at end game. Their DPS is miles behind the other two casters and their party utility is only situationally good. The ability to quick raise is really only useful for progression raiding, but once players figure out the mechanics, very few players die any more so that utility becomes pretty lackluster.

I do agree that the class is a blast to play though! Hopefully they will get some buffs in 4.4 or beyond to make them more competitive.