Instead of only nerfing Lee Sin (he needs it though), make champs to counter them
Yes I know that despite a lower win rate, when played right Lee Sin can screw over the other team. I also know he probably needs a rework of some kind. However he's been a headache for as long as I've been playing the game. Maybe riot should consider adding a jungler or 3 and a support who can counter him somehow. That way since riot can't figure out how to properly nerf him given his kit, perhaps players having champs who he can't crap on so easily is another option to keeping him in check.
I know riot hates hard counters, but I think in this case it is somewhat warranted. Maybe link the two champs in the ban phase as well so if the lee player bans his counter, lee gets banned too.
Problem solved?