A concept for people who DC or are unable to connect to a game
Perhaps give a message to a team that there was an error for a player on their team that didn't allow them to connect so that they don't complain and 9x report them for something that they're not a cause of. Instead of doing that for people who don't deserve that, leave that message for them so that they can understand. Also reducing the impact of the temporary bans.
Another thing, if you don't want to have teams to just 4v5, add a sort of Bot Substitute to take control of the AFK champ to at least have some 5v5 impact. It may not be much but it can still be helpful to keep the game at a 5v5 feel. Paladins has a mechanic like that so that players don't have to suffer an AFK player in their team.
Thank you.
P.S. Give Rengar and Kha Zix their own legendary VS skins please!