How can we really fix Talon? [A look at Talon's E and why it needs a change]

I feel like one of Talon's most defining features for his strength -- besides his burst damage, is the fact that it feels like, no matter what you do, Talon will almost always be able to get away.

While you would want to keep Talon's ability to roam the map in check, his ability to roam the map, kill someone, and then hop over 3 walls (more walls than any one champion can keep up with) is a little ridiculous. Talon should be punished for placing himself in harm's way like that and shouldn't have an incredibly easy out that others players can't chase him through.

What I suggest is to allow Talon to leap walls as he does, however to put his E on a significant cooldown the next time it's used while he's in combat. Bumping up the cooldown from what it is currently to around 10, or even 6 seconds would allow other players to actually interact with Talon in a meaningful way without feeling helpless to stop him from snowballing out of control.

The play pattern against Talon is: Burst him as he's assassinating someone near you and hope Edge of Night wasn't enough, or watch him leap over the next few walls as you desperately try to catch him.

Which you won't.

What do you guys think? Should Talon's E have an in-combat cooldown, and would that allow players to deal with Talon without making the Talon player feel useless? I think it would make the Talon player actually think about what he's doing before he does it, since he knows he won't be able to have the easiest out. One wall hop to make his great escape. He won't get another until awhile later, so he'd better understand the potential consequences of his assassination before he executes it.