I only recomend this game for PvP & WvW
There're 9 dungeons & fractals(7 shuffle mini dungeons) very easy, in a week you'll find it repetitive.
The bazar its great, works for all the servers at the same time.
Like i said you've to be very careful with your text or someone can report you and you'll have to report to anet and wait approximately 7-12h to recover your access to the game. Very abusive politic i think.
To make dps you've to chances: critic or condition damage, this's very bad becouse only in a few boss condition damage it's comparable to critic damage. In pvp all dps go to critic.
There isn't classes for dps, healing or tank. You should focus your stats in the way you like it, and you should focus your skills to support the party or not, that's fine i think.
The PvP its nice, but WvW is the best of this game in my opinion, estrategic, well balanced, arms of siege, key points to conquest or defend even a very funny puzzle to battle in. WvW is based in 3 servers battle in 3 identical maps and one more that is the best with a big castle in the middle.
To conclude: I only recomend this game for PvP & WvW.
PD: Sorry for my english :D I'm still improving it.