I don't see why, since all players in a game are in character selection and the player population queuing up is way bigger than any one game...why not hold up the game until you refill all the teams if people drop? Maybe only make it last 30 seconds at the most...can't be perfect, people keep dropping, you don't want others to leave waiting. But still, fill up teams after others drop, before, you know, the game starts.
Of course people can quit anyway, but it would help.
The problem is that some players get disconnected when forwarded to the actual match server. Since this happens after the matchmaking, a squad refill is not possible at the moment and it would be a complicated feature to implement, requiring a lot of back and forth between servers. Also, it would be unfair for the players that are added to complete the teams, because they wouldn't be able to pick from all the available legends
