-If it's able to run WoW it will run GW.
-If you like PVP this is your game.
-It takes actual skill to become good in this game.
-The balancing between classes is the best I've seen in any other RPG so far.
-No monthly fee.
-Instanced zones arent that bad, it just adds another difficulty for your team, because if everyone dies in a mission, you fail and return to the outpost where you can meet up with others or just try again.