Guild Wars is a horrible game. I played it for a bit, and thought it was too much like Diablo 2. It's horrible!
I hope it turns out to be Starcraft 2, or something. That would be great!
Or I've even thought that a Starcraft FPS would be really cool, too. Something like Battlefield 1942, but with Starcraft, and on different planets, etc. And along with it being a first person shooter, it should be an MMO at the same time. Wars going on in real time, all on the same server, and in a vast world/universe. MMOFPS.
It wouldn't be like "oh dude, let's go create a melee game!" It would be like, "hey, let's go over to that one clan and shoot them up." Like to make a clan, you'd have your own piece of land, and a building that you could go into... kind of like a channel. Except this would all be in-world, like WoW. Personally I think that would be the coolest game ever. They'd get my money if they made a game like that.