Small change to make Leesin more fun to play AGAINs
Make his 2nd activation Q blockable by champion, like Caith's Ulti. Give opposing team a window to counterplay, and stop Leesin player from faceroll after hit Q without a second thought. And also give Leesin a skill advantage if he can use that mechanic to hit a low heath enemy in middle of the fly.
Ever in situation where get hit by a Q under turret, and you was like "I'm dead, i'm so dead". No more! keep your head down! Let the support have the spot-light, and become a president's bodyguard, just for YOU.
Sound cool?