Here is the conclusion I've came to. Black Cleaver is Overpowered.
It is super core on a large majority of popular top lanes right now cause of it's massive shred, health, movement speed, and insane CDR.
It is super cost efficient for all of the utility, damage, AND tankiness it to literally every popular bruiser top and needs to be toned down some, or made more expensive. It is easily a 3,600 gold item based on how powerful it is. The shred Is easily stacked by bruiser and AD caster who hit multiple times (for example wukong can shred 50+% armor in about 2 seconds with an all in combo), Garen can also stack it several times in a matter of moments, darius too. This item needs to lose some of it's game breaking power.
has been a strong item for most of this season along with
and are "go to items" for most AD champions. I think the item is problematic more because junglers, bot laners, and top laners are all building this item over others.
and
were problematic. I don't know if the item really needs to change too much. Raising the cost will probably push the item out of bottom lane builds if crit items and black cleaver are about the same price. Also if they raise the cost people will begin to simply build
instead more often.