You know who really needs a rework?
Aside from champions we know like Shaco, Warwick and Yorick...
Kayle.
Kayles entire gameplay is oppressive when she's good with some of the best utility in the game and enormous sustained damage. In lane, her E has virtually no downtime (which it's sad because it's actually an interesting ability), her Q/W makes it impossible for you to escape her or trade with her because Q serves as a decent nuke, the small heal on W and MS boost gives her a kite or chase advantage and her E shreds you - all this while her passive makes it so you can't effectively itemize against her.
When she's bad, she's simply underwhelming and feels worthless. She's been nerfed so much and in return, Riot has put power back into her ult in exchange for shitting on the rest of her kit. She's binary as a champion and basically has zero counterplay when she's good. She's either a wall that runs you over or she's so worthless you wonder why she was picked. This alone screams terrible design.
I do think Kayles R can be a part of her new kit but it has to have more gameplay than pressing R on something and making it immune to death. Her E feels like a big identity and as I said, her E is actually a fairly interesting spell since its one of the few melee > range enchance spells in the game. Her W/Q are bland and uninteresting and can probably just be done away with entirely.
She does need a rework though and I do believe a Kayle rework would probably be easier than Warwick, Yorick, Shaco etc.