I don't like how a match play game with your friends just ends after the match is over. There's no way to continue a chat session after the game is over. It seems backwards.
They have a chat box we can use at the beginning of a multi-player game, when the players are ready, the game loads, cutting-off all chat. Put this feature at the end of the match as well, and let us end the chat session with a button when the players are ready to end it.