And if another input is detected mid match, it pauses the screen with a warning and if said input is detected afterwards it removes the player from game. Ex: 1) someone goes into a game on controller, accidentally presses a key on his keyboard, warning pops up and he dismisses it, continues with controller. He'd be fine. 2) someone goes into a game on controller, he grabs his keyboard to play on it at the start of the match, warning pops up and he dismisses it, he tries to use keyboard and gets removed from the lobby, sent to orbit to queue for kb&m. I know it can get annoying and/or mess up games, but it can definitely be a way to keep scumbags from running games. Have the warning pop up multiple times if another input is accidentally pressed, but if it's continuous or more than say 5 times in one match, it'll remove the player from the game. Edit: There can be 3 separate queues for games. Controller, mouse and keyboard, and mixed input. That way console players playing with PC players using different input can still play in lobbies. Just have if the whole fireteam is one input, it puts them in their own queue. Also have this a toggle option, so you can turn it off to match whoever (good for PC so controller vs kb&m can be how it already is for whoever wants that)