If it is not broken, DO NO FIX IT!

[Abriael]

In an MMORPG classes need defined roles and they should not be so customizable that everyone can do everything. That idea is great for the player, but not for the game. And this is why it needs to be changed.

That would be true if everyone could do everything. But that's false. And it'll be even more false as soon as challenging content (that as I read, is already planned for introduction) is implemented.

The fact that classes are flexible, does not, by any stretch of the imagination, mean that you can make any class whatever you want. You can not.