Why not have a CDR scaled by AP mechanic

First was a shower though on ekko's passive lockout time. It would allow riot to increase the time per level but give it a special separate cool down reduction that only scales with AP. So you can revert the time nerf for the early game but keep and even increase the nerf for the late game so that it will still target nerf tank ekko while leaving AP ekko relatively alone.

On that same note I think it would be cool to have an AP/CDR item that functioned something like essence reaver of "gain X CDR for every Y AP".