I just had an idea, wanted to share.

[PorrasouxRex]

So, while I was watching a new, recent anime called Sword Art Online. (Basically about characters being trapped in a virtual reality MMO) there was a scene in one of the episodes where the main character transforms into a boss from the early phase of the game.

My idea is a simple one: when we finally get to be level 100, give all classes one final bonus spell. A spell that gives us the ability to transform into a boss, from a list of bosses to choose from. Of course, some bosses like Onyxia and Ragnaros would have to be shrunk enough so we wouldn't be blinded.

It doubles our HP, doubles our damage output, and gives us great resistances across the board for a minute or 2 before the effect ends. 1 hour CD.

Cannot be used in BGs or Arena.

Has the ability to alternate between melee or ranged. (For example, Ony can melee, or cast fireballs from afar)

Video example: http://www.youtube.com/watch?v=ron0rmQgjE4

[Zhinru]

It's essentially "gives elite status for a short time", together with a snazzy model. I think... that's kind of too good to ever be considered. Sure I'd love to transform into some of the more unique bosses, but I'm afraid there are many little issues that would completely break it.