This is an experiment I felt I had to do, as I find Jhin's theme, art direction, visuals, and flavor, all over the place. I mean, he has Shaco's mask and serial-killer thing, Graves' poncho (but no cigar?!), Caitlyn's sniper theme, and Sona's... musical aptitude? He just treads all over so many champions, IMO, and doesn't feel like he stands on his own. (Oh! He also has this strange plant sub-theme...)
This isn't to say that I don't like Jhin as he currently is. Gamplay-wise he's cool, he has a perfectly functional kit, with nice counterplay and outplay potential, and he's brought some new things to League. I like all that, I really do.
But I think Jhin is missing something (or, rather, that Riot missed something) that could've informed the direction they took him. If we consider Shaco an 'aspect' of the theater and drama (he most certainly is), Sona the equivalent for music and instruments (that's definitely her realm), and we let Zyra keep her plants, what room does that leave for Jhin? What is his art?
Bare with me. We don't yet have a true 'forge' champion, or a 'painter' champion (though I think Jhin can touch on the latter thematically), and the closest we have to a 'sculpter' currently is Malphite and I don't think he counts. It would be a neat direction to take him thematically, IMO, and give the champions he's currently squatting on some breathing space.
I also hope to demonstrate how a few simple word choices can paint a entirely new (and, more importantly, imminently plausible) picture of a champion everyone is familiar with.