My biggest gripe with the game is the lack of small group fun for me in both dungeons and PVP. It is not a very good 'grouping' game. I like the combat systems, but I dislike the skill one. I really dislike the instanced PVP. I also have issues with the world goals and off hour WvWvW setup. There needs to be better carrots and also more of a battle feel in WvWvW.I think the game has quite a few flaws, but it's still the best MMO I've played in years.
Please list these failures.
The Yak nerf sucked, also.
Although I made it to 80 and enjoyed the PVE, and like the design, the overall feel of PVE was very repetitive. I was essentially doing the same thing at 20, 60, and even 80. The level curve is pretty easy, but even with that I was very bored at times with PVE.
I haven't played in a bit, but I despised the dungeons.
Kudos for Arenanet for having a 180 day refund program. I'd consider taking them up, but as I enjoy GW2 a fuckton more than Pandaland after making 90 there, then I think I'll keep it around when I have the itch.