Siege

In a way, I hope they do, but at the same time, I think it's quite fine the way it is. They were quite true to their word when they said that it was skill, not hours played that mattered.

I don't know how many hours, but if you go all out on doing quests and co-op missions, I would say that it wouldn't take very long at all, since the co-op missions yield a large amount of experience (1000 for the mission, 1000 for the bonus and whatever exp from monsters you get along the way)

From what I have seen, every class has it's counter and no particular class can destroy every other one (assuming skill levels are similar).

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"Your name's Geek? Do you know the origin of the term? A geek is someone who bites the heads off chickens at a circus. I would never let you suck my dick with a name like Geek"

--Kevin Smith

This part just makes my posts easier to find