Dont want to rant but damn is Conqueror getting nerfed?

A few options for my opinion on how it should be nerfed.

Once the player has reached full stacks, the buff lasts for X seconds before dropping off, REGARDLESS OF BEING IN COMBAT. They can instantly begin accumulating stacks again.

OR

After the buff falls off, the player can not begin to accumulate stacks again until XX seconds.

To be clear, when I say "the buff" I am referring to the healing effect of Conqueror