I see the trend of ensuring champions/items do their intended purpose, so here's another suggestion
Okay, by recent changes to Alistar Headbutt+Pulverize combo and ensuring that Muramana toggle is automatically switched on against enemy champions, I see that Riot is trying to make it impossible for people to mess up. While it reduces skill and practice needed to succeed, it's already done, so I won't dispute it. On that note, I have another suggestion that could be useful and it could be sorted into the same category as ''insurance of not messing up''. It's related to to level up and skill assignment. On certain champion, I always go the same order of maxing the skills, so developing a feature to pre-assign those points in the client so they automatically get used upon level-up would be useful to me. It wouldn't take away any skill of playing the game (as you would do that part before queuing up), and it would remove the possibility of messing up skill order, which f***s over some champions pretty hard. As I see it, it would be the same thing as item sets, set and tied to a desired champion, with the option of tweaking and adjusting as you please. Thoughts?