Can Jhin's W not fire until you are in range of where your mouse is?
This happens quite often for me (likely because I smartcast most abilities). I am laying as Jhin and I see a low health target and think that I am in range, so I press W. But I then see my W fall short by about 5 feet of the target. It would be nice if instead of "press w, fire at mouse location instantly" it was "press w, path towards mouse location, once within maximum W range, cast W towards the mouse location where W was initially pressed".
I feel that any champion, but with Jhin specifically because of his "larger than actual screen size" ability range, this could be a great help.