As for the balance of weapons, I have to try more but this is a thorny issue because it depends on how you play each player, but everyone can use all things, so please do not complain more about this issue.
As for what happened I think if a more advanced product offer also run more risks so that must be treated, and in a couple of weeks Crytek has achieved a very acceptable stability and performance, other games like CoD, not to risk and present again and again the same fomula is clear that they will not have such problems.
Perhaps they had missed 2 or 3 weeks to have thrown the game more refined, but imagine the pressure EA to Crytek to launch the game on schedule is something related to what happened.
That's my opinion, to greet you all and tell you that my id is PREDATOR2d2 in the game, add me as a friend and as well to see if it met with a few more games to win because it's hard to find players to play as a team and aim to win the game, not killing 1000000000000000 I achieved the objective points.
A greeting.