Just because you don't 'think' it'd be difficult, doesn't mean it isn't difficult. Do you know how much coding goes into a big game like this? Not to mention they had to scrap 1.X's way of leveling/ect to improve the game experience.

If you don't think it'd be difficult, do you mind giving an in depth idea on what would be done to separate class and character level? what would be the difficulty of a new tank in a low level trying to keep aggro with someone who's got full 60's across the board?

What about someone who's got your levels compared to someone who's got more all around levels in the same instance?

What you've said so far is honestly, to me, looking like 'My idea is different' but I don't really see much information that isn't vague.