I think it's not bad compared to some of the shit that people are playing right now, nothing revolutionary or amazing but it's been entertaining me so far. It's definitely not a bad combat system, it's atleast more fun than all your "point and click" kind of MMORPGs which I have grown sick of.
Gristle, both fighter classes underpowered? I'm playing a Guardian Fighter about level 18 and I don't really feel that underpowered right now tbh, I always rank middle of the table or sometimes higher in terms of damage but I'm also able to stay in the pocket, generate threat and make the bosses etc focus on me. when it comes to PVP the Guardian also has decent survivability and can also dish out some nice DPS if specced right, of course there is a lot of balancing to be done right now but I think peoples perception of OP and UP are unjustified in a majority of cases, as you can find a thread about every single class with people claiming it's UP or OP. The Great Weapon Fighter does look a bit lack lustre and probably needs a buff, but so far I'm pretty happy with my Guardian.