I've played quite a bit and for the most part I love it. The biggest thing for me aside from the obvious bugs that will be fixed is that ever-present concern of armor ability abuse, which we've been afraid of since it was announced. I love the jetpack, and I can't really see anything wrong with it- each pro it offers has an equally strong con and it feels balanced. I haven't seen sprint or dodge abused at all either- it doesn't feel "unfair" for somebody to have a brief rapid movement (on the contrary, I smile and applaud every time a distant guy with a sword surprises me with a sprint). What these abilities all have in common is that all they affect is your movement. I think we're used to people having varying levels of skill in movement- taking a sneaky path, narrowly avoiding the melee, pulling off an impressive jump. The point is I think that it extends their existing ability in a way that doesn't affect your ability to kill them.
Armor lock and camo, on the other hand, are starting to irritate me. In the vast majority of cases, they're just another ability, and I love to use them and have them used. It adds variety to the game. Still, they're open to abuse. The recharge time on the armor lock is so short that if two people have that ability they can alternate so that one of them is locked at all times while another can shoot at all times. This is a good tactical move, but it is quite difficult to counter without strong coordination and its effectiveness doesn't fade with time; it feels unbalanced. I'm not calling it broken, and in most cases I'm perfectly fine with it, but every once in a while in team slayer I'll lose 50-20 because two guys on the other team are spamming armor lock.
I was going to cite an instance where the camo was abused in KOTH, but really the problem was in the placement of the hill and the fact that the guy was camping, something you really can't do much about anyway.

I've heard people complain about the grenades a lot, saying they're too powerful, but I feel ok with them. Many times I'll be surprised to be killed by a single grenade while at full shields and health, but I don't think there's anything wrong with that in itself. There does seem to be a bit of an issue with grenade spamming in some gametypes, but that's just something that needs to be tweaked in the loadouts.


On the whole I am very much enjoying this game despite the few gripes one is bound to have about any game.