Add IBMM (Input Based Matchmaking)
I have friends who play on console - I switched to PC a long while ago so the list of shared games myself and my friends have is short. They don't want to play against PC players, and I am okay playing with a controller.
So, why can't have Input Based Matchmaking. You could then allow players to filter based on their preferred input method, and then make it so that if you have IBMM turned on, you cannot change your control input unless you re-launch the game or disable IBMM. This would allow people to have more choice in the games they play, and further prevent people just joining controller only lobbies and switching to MKB. Right now, the two people I would play this with refuse to match up against PC players and as a result, I'm not really going to wind up playing the game because it's less fun when you have to solo queue.
I'm aware that there's allegedly an "input preference" but I have noticed no difference in the lobbies I get when I tested it and, further to this, right now you can just switch back to MKB even if this preference filter worked.
I am not sure if there's an official forum for these suggestions but the fact myself and others have waited for this game to come out, only to not be able to play together after a week of it being released is pretty sad for us. If this is meant to go elsewhere please let me know, and I appreciate your time in reading this.