Dear Riot, Please fix loss prevention.

So I understand that there is mmr, which is like a hidden elo, which decides who you are placed up against. Anyway, i want to get to the gold or plat mmr in normals, before i start ranked again. Anyways there is bullshit when we have an afk, literally throughout the entire match, and we don't get a loss prevention. Another game, more recently, my entire team (except myself) dc'd due to live maintenance, during a damn team fight. The enemy team just face-rolled into our base and won the game within 3 minutes. Why no loss prevention for that? To me, it seems like i only get loss prevention when I win a game, for seemingly no reason at all. If you ask me, riot should enable loss prevention if you have a a player that has been dc'd for more than 5 minutes, because that's really all you need to get a boost in-game. In fact, 5 mins is more than enough time for the enemy team to get more ahead, or even catch up. Sure, i think the enemy team that has the full team should still get the win, but the team with the ass whipe afk'r should get loss prevention. I just want to know what others think about this topic. Thanks. (I know i sound like a bitch complaining about normals, but it applies to ranked as well.)