New Game Mechanic? - Make the Jinx W change to other ADC's

I thought it was a really cool idea to make jinx's cooldown of her w scale with some of her stats. It kind of reminds me of a kai'sa type interaction where you get a better ability if you build a certain stat.

My idea is this, what if on champions where it makes sense, you scaled the cooldown of other abilities? Or maybe the cast time? Take for instance, Caitlyn, her traps cast time is really long, but what if after a certain attack speed that trap cast time went down by 25% or something. Mf, might gain a bit more movement speed on her W after she hits a certain checkpoint in damage.

With this mechanic on a lot of other champs you could make them scale much better and help even out the scaling curve.

Just my thoughts, let me know what you guys think.