FIX THE AFK PROBLEM
There are two types of AFKs.
THE CHILD - Cries about not having jungle gank him or whatever then rage quits. Nothing we can really do about them besides ban or report them.
The Actual DC - I know most times its not their fault, wifi goes out etc. The thing is a lot of DC people have really bad wifi at the moment. Shouldn't riot just come up with a system to fix this. The Solution is to make a system where they check if your wifi is currently stable. If it is stable you are allowed to play, If it is not then the system prevents you from playing. This system would be best for rank specifically.
Its very annoying when someone DCs and comes back 5 mins later. They say oh my wifi is trash. Well if you have 200 plus ping, you should not be playing ranked. This wont solve all the AFK but it will help prevent a lot. People if you are lagging your ass off, dont enter a rank game, dont be selfish because your preventing yourself and others from making progress. (I had 4 AFKs yesterday and 2 today in rank, Im annoyed)