I feel like there is a way to address 4v5s without breaking the game. Hear me out.
Everyone and their mom has at somepoint dealt with a 4v5. It sucks ass i fucking hate it and its a huge waste of your time and you also lose lp for it.(For most peoole winning 2 games in a row and then getting an afk in a 4v5 and losing will put you at maybe +10 lp so basically 3 games with very little results) If somebody ragequits for an extended period of time, and the other team wins, give them that lp by all means. But it should be very possible to just flat line the team that has a missing player. Giving them 0 lp so at least it feels fair. And the common argument i see in this is "Well someone is just gonna abuse it" First off, people that leave games get punished so like it wouldnt really be something people would want to do Secondly, The person who left receives a full match loss and the rest of the team remains at a 0 lp gain/loss. Seems 1) entirely favorable to the team who dealt with said dick wad and 2) would encourage players to at the very least, not go afk (I havent quite worked out the methods in punishing people who intentionally feed tho :P) And lastly, generally i dont think people are gonna be like "well i want the enemy team to get lp and i wanna lose mine in its place. And if they DO think like that, so be it, they can lose 20 lp and their team wont have to get penalized.
I wanna know if this sounds like a bad idea or not. Because generally it would take a lot of the actual cancer that is playing 4v5s, out of the equation.