Online Co-op

You should be able to play on the same team as your friends against either the AI or other groups of people. Most of the functionality for this already exists in the game. You already have local co-op and you have online matchmaking. I have seen multiple posts of people asking for this and they have been asking for it for years. No one asked for Pro-bowl mode. Instead of wasting time on that why don't we put time into a feature people actually want?