Why lee sin will always be kept they way he is.
If you look at (at least by community standarts) the top "high skill floor champs", top lane you have riven, fiora. mid you have yasuo and azir, some other mages aswell. adc you have (well not currently but) vayne, lucian. support you have thresh, rakkan. jungle? lee sin. yes there are more, i just gave a few popular examples, but i can't think of anyone in the jungle who's high skill cap at all, most of them are just very very simple, even if high skill cap in the jungle it just makes it easier :\
edit: if it helps, think of the difference between a good x champ and bad x champ the difference between a good lee sin and bad one is incredible, either they're fed or behind you can tell the difference. unlike people such as evelynn or kha'zix, while kha'zix is hard to learn, it's not much difference besides "good kha'zix's know how to get fed" shaco i would consider but everyone just goes dark harvest duskblade and one shot ppl.
In my opinion has a pretty high skill cap as a jungler, If you don't know how to rotate him well and how to gank properly you'll end up feeding your ass off. But if you know how to play him you can do pretty well.
Always found her way harder than Lee, as she can't even build tanky if she wants to keep doing damage.
level, but surely
level.
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