Something I was thinking about the reworks

I think Eve, Nocturne, and Rammus are fine gameplay wise.

Eve can be assumed to be from the Shadow Isles, Fiddle is the construct made from a summoner's experiment gone wrong, Nocturne manifested in the Twisted Treeline, and Rammus is a magically changed armadillo... okay Rammus could use a lore update.

Out of all the champs you named Shaco is in need of some kind of update gameplay and lore wise. He is basically the Joker of league, but to me he does not really look the part and only partially plays it.