This is really terrible news. I can forgive the limited online multiplayer modes. I can even forgive the absence of bots, even though this game is perfect for them.
But I can't, in good conscience, forgive the lack of voice chat. This game is a squad-based tactical shooter. Players need to be able to communicate with each other.
I hope, at the very least, voice chat among friends is provided.
They'll probably add it after enough people complain. The game's gonna be popular.
One missing feature I'm bummed about is that there won't be the ability to create a team of people you want to play with, so that you could at least use skype to communicate, knowing you'll be teamed up with friends.