i belive jhin should be nerfed
if and adc can run faster then the speed of light and still one shoot u that a problem. lets look at other adc´s. draven, he has a W that will make him go faster and it will give him AS, he doesnt have much CC but still a good champion. MF,she has a passive out of combat MS. she can slow u with her E and one shoot u with her Q but she cant run away from u if you have a dash or a leap or something like that, kai sa, she has her E and her ult for MS/dash and nothing more, she can out play u with her upgraded E but not much more then that she cant really get away from u, all these champions can still kinda run away from you, but jhin in the other hand WILL run away from u if you dont have hard CC and if u do he will just oneshot. u basicly cant 1v1 a jhin if ur not someone like darius that can keep slowing him or someone els other then that u cant kill him if u dont oneshot him, he can slow u CC you can oneshot you, and its really annoying to play against because he just comes in hits you and then runs away.
but
is just too good of an item on him and makes him have that movement speed passive up almost 100% of the time