Ideas for AFKs and DC

Ok, So, for too many games that I have played there is always a AFKer or a person that DC'ed which turned an enjoyable game to a slaughter on our side. There is no way that anyone can play 4 v 5. I know there is a lot of implementations to prevent AFK's through banning and reporting, but that does not solve the issues immediately at hand in which the players are forced to suffer the consequences from one player.

I have a suggestion in which players who disconnect either voluntarily or involuntarily are given a timer (maybe like 2 minutes) in which they are allowed back into the game (in case they had a slight internet problem or something) and then that particular champ in game is opened up to a player in queue in which they are allowed to pick up where they have left off. That way we can have games that can continue 5v5 or at least after 2 minutes the game is paused to prevent further damage and allowed the system to place another player into that slot.

Those who join into the game are allowed loss prevention so they are not penalized for entering a game that has not been started by them. And to address the fact that not all players are proficient in all champs, the champion slot is only available to those who have a Mastery level of 4 or higher. Also those in queue would be given an option when the queue pops whether or not they like to join an ongoing game.

At least something to that effect I think should be in place to allow players who have been left behind a fighting chance after investing so much time and effort into that particular game.

Please let me know what you guys think.