This is just a random suggestion that has become more of an issue now player numbers are lower in duos and squads but may be useful generally - if someone leaves a party in the lobby area, you don't get another player who also has autoqueue on back into that slot, and sometimes that means you have a squad of 2 or 3 instead of 3 or 4 and it usually snowballs into the whole squad leaving. It'd be nice if you do happen to get a single queuer (or however many spots you might have left) after they leave, that they backfill into your squad or duo, and then that way they also don't end up solo squad. Hoping this stream of conciousness makes sense 
This could be applicable to other modes too that have the team element, too!
#Allow Backfill On Autoqueue When A Player Leaves In The Lobby
loud hamlet
fresh tiger
this should definitely get into the game