Must admit that I am a bit worried, seen quite a few videos of people running around spamming their 1 ability for the weapon (and yes everything else was unlocked) and nothing else...
Both for pvp and pve this would be very unacceptable, as I am sure most people will agree with, it is pretty much tantamount to having a player stood there, increasing the difficulty of the encounter by doing nothing and increasing the difficulty of the accounter by being there (scaling). There are these people out there, nomatter how well the game goes about trying to teach people how to use their skills, or tell them how their class works, you will get idiots, Guild Wars 2 will NOT go free of them. Even if melee rangers might work, and some weapon sets for the different mages require a more close-contact approach than others, that doesn't mean that there aren't other ways in which idiots can harm your experience, by being idiots.
And even if they are bad, and don't know how to ressurect, they will still be taking up a spot in your pvp team, or increasing the difficulty of the dynamic event in pve, just by being there. I don't think the content scales to such an extent that you have to have everyone be at their cutting edge of gameplay to succeed in DE's, but still.