I don't have time to play many multiplayer games, so when I have played a game I would like the possibility to discuss the match after the game is finished.
I see people doing this in the lobby of a next game but a best you get only a few people who were in that last match, and I don't play consecutive matches so for me there is no 'next lobby'. When playing the colony stock mode this hits even harder because that last stage of such a match is the most hectic, and people are less likely to chat than in normal mode when you can see a buy-out coming.