Here's how you fix the need for autofill

You simply merge RU,EUW and EUNE again.

Speaking from a EU standpoint: There were never any differences between the regions. The only reason that Riot created a Pro EU and ForTheLolz EU was because they were a younger company unable to handle the server stress.

At this point they are not the same young company anymore and if they have such a need for autofill to be a thing, someone has to wonder to what extent they have the same server stress as well.