Idea on balancing lee
So lee is really strong rn so this is what I think would tone him down without making him bad
this item is the real problem with lee sin ------> 
since trackers knife works like sight stone, it gives you 2 free wards everytime you back, making ward hopping super easy and cheap to do. However, if Lee Sin was stopped from buying this item, ward hopping would become much more fair.
Therefore, if Lee would want to ward hop, he would have to
- use
which is on a very high cooldown - use
which costs 75 gold a pop - use
which would significantly reduce his damage output
so these ways, when a Lee ward hops, it would come at a price and sure, a good Lee can still insec the enemy adc and make flashy ward plays but it would reduce some of Lee's crazy good mobility.