Can a Rioter tell us in detail why you think Lee sin is balance in the state he is in?

Of all the jungler that ticks me off is Lee sin he seem like he does everything from high mobility to high damage with high sustain.Riot has nerf his ult cool down and damage but what I don't understand is why do they think his ult was the main reason he was busted to have over a 35% play rate? He is just a overloaded champion to the core jungler with the only ones going near his overloaded kit is Elis or Nid but they had their jungle item nerf in the past and they have one thing that lee sin doesn't which is mana cost and no build in shield/life steal .

If you look at Lee sin ability you can see in ever single one of them there is a 2nd effect added on with it,

Q first dmg from afar then a another boost of damage when he press it again with mobility lets not forget how much damage that thing does. Safeguard allows him to dash to a team or use it as a escape to a ward while giving either him or his ally a shield (50% cool down reduction if on a ally) if he press it again he gets bonus lifesteal and spell vamp. Tempest does damage and true sight while pressing again slow his enemy and finally his ult which does insane amount of damage not that alone but he stuns a person for 0.25 sec knock enemy back into his ally who also get knock up and take damage.

Not a single one of his ability is not overloaded at all it seem like every time he use a ability he always seem to have a extra layer added on to the enemy, people can say that "Lee sin falls off noob get skills" Why yes he actually does fall off but that's at the 30 minute mark which games rarely last that long any more because of Riot shuffling to either make the game last longer or shorter. In those 30 minute Lee sin has the most mobility/damage/tank then any jungle all in 1 with high success rate to gank because of his Q giving him a large range.

Right now he is hovering over the 47% win rate but that's because he has a play rate of over 35% which is extremely high so all I want to know is do you think he is balance and why was it his ult nerf? Damage is high but once he land the ult it is 85% insure kill because of R+Q or my favorite ward hop>flash>R into the enemy's arms