Masteries
Am I the only one who really hates Masteries?
Like, I'd prefer if there were specific masteries for each champion based on their already existing skills. Like as a Spider-Man you could pimp his dexterity. Or you could improve upon one of his weaknesses in a not so major way, sacrificing majorly improving his strengths in the process.
Just feel like general Masteries for all champs streamline the experience too much, taking some of the uniqueness from each champion