Modern Warfare 2 already has that ability! Except its usually known as getting spawn killed. muhuahaha.
On topic: Just 3 game modes kinda worries me, hopefully all 3 are fun, because even if just 1 of the 3 modes sucks ass then that only leaves you with 2 to play and that would get boring quick.
They said shit about bots, I sure hope that means you can have offline battles against bots like in Killzone 1, that would be fantastic.