Communicating with other players is fairly limited.
1. outside a game : why can you not add friends in the game to your steam friends?
2. outside a game : why can you not message friends with your words? (typing your own sentences)
3. during a game : When speaking to an ally, I would like to be able to point a territory to attack, rather than just name a color.
4. during a game : a chat window where you can type you own words could be nice, either with an ally or with all players or both.