If you wanna get arrogant when somebody explains why the idea is bad, then don't share the idea if you're afraid of the feedback.
This isn't tf2 or overwatch where the skill of the players simply turns a game on return. This is league where open mid is pretty much what a losing game is when your behind. Granted there are comebacks, but that's not if only 2 people try like in OW or tf2, that's if the whole team tries which with an afk, is unlikely. There is no reason to "afk fill" cause in that time it takes for somebody to load in, the game is already in a horrible snowballing out of control position, making the comeback a struggle.
After all, why would I want to sign up for afk fill, and then have to fill in for a 0/5 kha'zix who ragequit and spent his gold on tears. It would not benefit me or my team in the slightest besides having somebody else to surrender vote, and it certainly wouldn't benefit the filler who has to walk into potentially bot lane fighting, mid complaining about ganks all game, and top proxying while 0/9, while being told to stay in base so the enemy can end.
If the system was implemented, it would be a failure cause nobody would ever do this.
If the system succeeded, it would be more generalized to the game, and we'd potentially see dumb decisions by riot with it such as auto afk fill, just like how new role select was amazing with role selection, then became a curse.
This is not me being a dense git, this is me knowing through history how the idea will go down, than analyzing the theory on what situations the new mechanic will bring.
