How to better handle a DC mid game.

So, I'm not the greatest player, and neither is my buddy. However, he just got into his promos with a free win already, and we got 2 DC's in a row. One at the beginning (he dc'd after 3 min mark) and one rage quit mid game after he died twice. Basically in my opinion it wasn't fair that he lost both those games and got put back where he was. Honestly I play with him all the time and this is not the first occurrence where he gets a DC during promos. So my solution is this, what if when the dc happens, there is a 1 min grace period for them to rejoin, if they don't, the team can call a remake. However, you may say this could be used to troll the winning team. The way to prevent this is by making it so that the winning team still RECEIVES the LP, the surrender team stay where they are at like an actual remake, and the dc loses double the LP, or 2 losses. I don't see how this could be an issue cause I will never see those guys again, the game is to large, I don't care what happens to their LP, I just hate getting a DC and losing LP or promos because of it. Maybe make it so that it only affects players below gold So that high level players can't abuse this for LP gain. Please read this, and get this fixed, it really just isn't fair. Sure I'm kinda whining here, but hell I'm sick of losing shit because of DC's.