I hear you man.
Think about a game like counter strike…
FFA is just to warm up, train your skill
5vs5 is for even more training with team play…
Then, the true reason you play for is ranking / tournaments…..
So basically, they will have to get a ranking system in GW2 or people will just stop playing pretty quickly.
The PVP is fun, but how long will it last before boredom…..