I've spent a good 3 or 4 hours on this tonight and i like it a lot. I'm currently half way onto private 3 ranking. At first i had some trouble just like everyone else trying to find a decent server and the CTD on the server browser, but after adding a few multiplay servers to the recent/history list, and joining that way i can squeeze into a uk game no problems at all.
It does tend to lose connection every now and then, but nothing a quick rejoin to the same server doesn't sort out.
I have noticed that there isn't any smoke cans on the tank, and there is no flares on the chopper. I hope they put them into the final game.