Would a random kit champion be doable?
As someone who's played a fighting game or two, there's occasionally a character in a fighting game who has a move list that is a mashup of one or more chars or is given a random character's kit.
Would a mimic style champ be doable in LOL? I doubt he'd ever be played in the LCS however there's something compelling about chance. I'm sure there's a ton of people who'd see the appeal in a champ where you never know exactly what you are going to get from game to game and it'd make the other team wait a while to figure out which champ's kit your mimic has.