In Regards to the "New Black Cleaver"

On the PBE - is undergoing some major changes and many champions will be affected by it; more specifically . It's one thing to have the natural armor shred by the flat armor penetration helped for some of his crazy damage spike during the mid game and now with "rage" being Black Cleaver's new passive (still having the % armor shred) - is there any way to give him a slight buff to help with armor shred? Right now his current attack speed is a little under and I feel if Black Cleaver won't give him the flat armor penetration, then he should be buffed via attack speed. Thoughts on this?