You know how you message a friend but your message never gets sent simply because they're in a game? I think KSI should create a feature where our messages could still be sent through, even while the other character is playing a game. There should be a feature in the chat box that shows "missed messages" or something like that.
Because there have been many times when I wanted to message a friend, and then a box will pop up saying "Your friend can't receive this message at this time" (it goes somewhere along the lines like that). And I literally wait until their game is finished and quickly send them a message.