Add showed hitboxes
I doubt anyone can say they haven't had that instance where they've been hit by a skillshot that didn't actually hit them- or at least, looked as if it didn't. Especially Blitzcrank grabs, or heck, iBlitzcrank grabs, that skin animation has to be half the size it actually is. So, what about hit boxes? Obviously it would be a feature you could turn on/off, but it would be really great for dodging.
Basically, imagine a skillshot, maybe, say, a Nidalee spear, with a box over it, maybe colored in or maybe just a line. You'd see what the spear looked like, as well as where it could hit you at. I think it would really help in how unfair it is to have something look as if it didn't hit you, none of the animation touch you, but figure out in reality that its just the animation and you still got hit.