Lee sin ruins the experience for me wherever he is.
If he is mid he destroys mid.
If he is top he destroys top.
If he is jungle, he is one of the only champions in the game that can outmobilize wards without friendly or enemy targets (by placing a ward). Oh you warded the river? Cool I will just drop a ward in the respective pit and jump over the wall into your jungle.
You need literally 5 wards to protect your lane from a lee sin, and once he hits you with Q, you are pretty much dead because of his kit. It is a straight line skill shot with insane range and an auto gap closer lockon if it is hit so you can't even flash from him.
Somehow that is okay though, but a lulu or soraka mid makes people cry.
this is why we ban lee singer.