Ranked Mastery Requirement
It is clear from Riot's perspective that autofill is needed to keep the queue times down and that is something that is not going away. However it is also clear that the level 30 requirement is not sufficient for many new/existing players to perform competitively in ranked. This leads to a more toxic environment both for players trying to win the game and for players trying to do their best in an autofilled role. Often times the loading screen for a game pops up and you could see your team or an enemy team with mastery points. Mastery points do not guarantee a win, but they do provide a baseline that the player has at least played several games with the champion so regardless of how they perform their issues are tied to the individual game matchups and scenarios and not to a lack of experience in using the champions abilities. It would be nice for Riot to consider having a mastery lock on champions played in ranked, so they have played sufficient normal games prior to taking it into a more competitive environment. I'm not saying that people need rank 6 or 7 to play in ranked on a champion, but even 4 or 5 would prevent first timing a champion in ranked across any elo which often times results in a harder time for the team winning the game. I know there will be counter arguments that it makes it more difficult for smurfs getting into ranked and getting their accounts into higher elo, but as the majority of players are not smurfs and are trying to play the game from Iron-Gold it would be nice to make it slightly more balanced with a mastery baseline to avoid trolls from autofill or just from people trying something new due to frustration of a bad game on a champion they are experienced with. I just wanted to put this idea out there for devs to think about as a way to reduce toxicity/trolling in the ranked environment, it will not eliminate it but would be a nice start in that direction and several players I have come across agree that this would reduce their frustration in ranked games.