They won't be able to communicate with each other. I started to wonder about this a while ago: Is it a requirement in today's casual multiplayer game to provide the players with the ability of talking to each other? Either by in-game channels, or some attached third party forum? Or, if it is not a requirement, how serious is the players' need of boasting and talking?
Is this something I need to put in right now (even if it delays the start) or is it something I can postpone until the next release?