I did a sneaky 2 matches this morning, my biggest annoyance is people with torches in the middle of the day, it seems that people run around with torches and lasers on to blind you so you can't aim at them, even though it shows you exactly where they are, seems this makes a massive difference. Since you have to be accurate with your shots, the torch can make it really hard to get it right, and if you don't have the torch they can easily shoot you. Honestly, I think this is stupid and should be removed, it hardly improves the gameplay experience.
Also seems that just like in BFBC2 having crappy but fast shooting weapons is a big advantage, I had an M16 (start weapon?), and though on my screen I shot the guy 3 times, and he ended up on 20% health, I died because his little pew pew sub-machine gun shoots faster. This happened to me loads of times, sort of "oh come on, I shot him 3 times", was no different in BFBC2 though.
Another annoyance, when somebody on the other side knife kills someone on your side, their red (enemy) sign above their head seems to disapear, I stood there watching a guy get stabbed, while in the motion the red disapeared (not the blue) making me think it was one of ours killing one of theirs. Turns out it was an enemy when his red mark popped back up as he ran off with me shooting him.
Thats all I have time for today, lag issues seem better than BC2, graphics are beautiful and the maps look cool (though they are all new to me), but so far I've seen almost no team work and a lot of torch lights in the middle of the day.