4v5 with no remake possible

I would like to see an adjustment to LP loss in regards to someone either quitting or DC. I have recently been getting a lot of games where someone either quits very early on in the game or disconnects and doesn't return for quite some time (if at all). If the players who stayed and lost could lose only half LP or some reduced amount, I would be very pleased. This would be disabled if the person who left was part of your premade to avoid exploitation. I'm tired of trying to climb through plat and getting so many trolls.