Been playing it for quite a bit, the Strategy part of the game is what I like. It emphasises more teamwork aspect. Bullet trajectory is quite fun, but then again I've never fired a real m16.
Like chaos says.. it sucks getting killed by your team at the start of a map, its one life, so you'll have to wait for a long while and watch.
The game isn't terribly hard to learn and I became somewhat good within 4 days of playing it. Not like in Aces High where I'm still learning.
Overal its a decent game, the realism is its big plus. Netcode is crappy, graphics mediocre, team play good, maps fun, I like mountain pass the best then probably Weapons Cache SE because you get to use the m4 and those rangers seems to be tons more accurate.