I think one of the main complaints I keep hearing from my outfit is how during big fights the game is not rendering the players around you which is ruining the flow of combat, you can be standing there and see nothing infront of you, take a few steps forward and oh look 30 NC just appear in front of you.
Couple that with them appearing and disappearing, that the enemy can see you but you can't see them really steals some of the magic from the games massive battles.
Also again I'd like to point out the falling through the world bugs are still a big problem, last night the planet Auraxis ate our entire platoons 3 Gals while they were loading up with almost all the platoon inside them.
I believe a few choice curse words were used..... okay it was a lot of cursing.
It's even begun to be refered to as the call of the core "I don't want to go to corecombat!!!!!"