There is a difference between being user-friendly/well designed, to being dumbed down.
I think a lot of what developers are focusing on is more on reducing the barrier to fun. Having to remake your character and grind just to try out a new build is not fun. Guild Wars realised this, and with their rich system of classes and skills capitalised on that, to allow fun, varied experimentation in terms of combat and player interaction. Guild Wars 2 hopes to expand on that, in a more constant MMORPG setting, we'll see how it works out.
