Has anybody ever made this suggestion about Darius?

I don't think Darius needs the bonus armor penetration on his E. I think it would've been fine if his passive didn't proc Black Cleaver's effects which makes it even easier for him to kill you. I think he's already strong in area denial and he already has insane heals which allow him to stay in a fight and his bleeds do insane damage over time.

I think taking away his armor penetration may be a step to easing player frustrations.