Ranked leaver prevention

Highly doubt i'm the only one that this has happened to but I'll get games where I'm on my last game going 1 - 1 on promos and the last game someone will leave or maybe two and that'll lose us the game. I mean like leave at soon as the time elapses for a remake.

My suggestion is that there should be a way to prevent that, if someone leaves at 5 minutes and we can't surrender nor do anything because the game suddenly turns into a 3 v 5 there should be a saving grace, similar to the remake system.