Loss prevention in ranked

I'd love to see a system where a game either doesn't start when one player does not connect (on the loading screen) or the loss is prevented if said player still hasn't connected after 6-7 minutes.

I've lost several games due to a player not connecting in the loading screen, then joining in 10-15 minutes later when we've had no jungler due to him needing to take the missing lane. That followed by a lv 1 jumping in lane and possibly feeding an enemy.

It's entirely plausible that person can still grind their way back into a game, absolutely not what I'm saying.. But the simple fact that 70% of the players below plat ELO will not be able to do this is a serious handicap if you're trying to ladder up and get these kinds of people in your team. I know this might be an unpopular thing to say here, but look to DotA for a similar system. Nothing is lost if someone leaves or doesn't connect.

It's not their fault if their internet cuts out, but it shouldn't be a factor in the loss of LP either, I'd love to see a fix for this.