Proper feedback would be like:
~ Remove Lee Sin stun when he CASTS his ultimate, this removes counter play from Lee Sin and is extremely overpowered, he will work perfectly fine without it. The stun against his target to clarify, cast times are meant to briefly stun the user, but they should NOT stun the opponent. This would do wonders to help balance out Lee Sin.
~ Reduce the range he can cast his second Q so there is less lead-way for him to jump to the target or not with the threat of the target can walk away if he waits too long if they get tagged by the Q.
~ Remove ward hopping from the game. Period. This will reduce the mobility creep in the game slightly. With a change like this you need to decide with Lee Sin if you really like the insec mechanics or not, if you like it then make changes in his kit so he can innately do the trick; like his E reworked to jump over a target so he can insec them into his team, the second cast will be an AoE magic damage nuke and slow.