This is crucial for the game life, if you let them able to do it like now we will be full of aimbotters/hackers in no time.
there was already aimbot even in the multiplayer demo, i saw looking on the leaderboards.
i've ordered my copy last week, it hasn't arrived yet so i can't play, i don't know if you have punkbuster, vac or wathever, by the way if you are not able to avoid no-legit players to join the servers every countermeasure is useless (they just create a new user/change ip and restart)
Please make sure they won't be able to do it in the future patches, thank you.