I just can't see it lasting, the builds are too open, meaning the majority , except the hardcore who will happily play weaker builds so they fit in for their character, will be using whatever is the most overpowered build, and all respec and rebuild whatever the next overpowered set is.
With some defining features with specific classes you get people who like to play healing classes and won't choose invunerability in a melee class just because its overpowered.
That said, it will always be worked so it will be basic, simple and work on consoles, meaning it just won't ever be as good as it should be and will always be overly simplistic and frankly, dull and easy.
Seriously, a game where you can press one button and have it auto attack and take a mob down without any further interaction is, just beyond stupid. COH the autoattack was basic, massively weak compared to even the most basic attack, slow and would take an age to take down even a lvl 1 mob.
Combat so far, has been dull, quests, dull, doesn't look particularly good at all, which all kind of makes it a poor game.
More people I know who played it hate it as opposed to love it, can't remotely see it lasting with large numbers playing. I honestly see 2-3 major nerfs, everyone changing to the latest uber build before people start getting completely bored with it.
I don't know how much my opinion is based on originally wanting, and thinking it would just be COH with vastly superior graphics so being dissappointed and how much its just a bad game, somewhere in the middle probably.
When I compare it to COH though, quests, combat, the world, the style, the animations, the individual attacks and the general powerful feel of my character were all better.
Going to wait for a trial and see how it is maybe a month or, 3 after launch before seeing if I really want to spend money on it, can't see it having changed enough by then to be worthwhile to be honest.