My biggest issue with the game.
Besides the other stuff I mentioned like boring missions, piss-poor gear system (guns don't get better base damage at higher levels for the same shot type).
There is one major issue that really detracts from the game to me: It feels too much like a single player game. I think the game needs a sort of global chat channel so people can talk, I mean why not? Sure alot of people will troll but I personally find it entertaining how they seem to like to work so hard to be an *** on the intarwebs, I find it funny. We also need a more noticable chat window, typical mmo style in the corner be great insted of it being like it is (if there is a way to make it like a typical mmorpg chat window let me know). The game just feels kinda dead to me, even at arkfalls with a ton of people no one really says a thing. Yeah they busy shooting stuff yatta yatta, but still.. The community also needs some work, was at a big arkfall, got ganked (damn archer hellbug nailed me from behind) was dead in front of 30+ people, and not one of them could spend the 3 seconds it takes to revive me, that is pretty sad. Yeah I shouldn't have died, but would it have killed them to help me back up as I would have done for them? Personally I think arkfalls need to be made much harder so people have to work together more.
One last thing.. P.s. Hellbugs need a bigger weakspot :P Namely warrior/matriarchs, pain in the arse to hit their weak points, especally the matriarch.