The correct fix was to nerf the combo, not the cards. While what you call it is hardly important, mitosis is not OP. A combo that uses mitosis is OP. I prefer to use the word 'broken' to describe such a problem.
And I prefer to not invent multiple names for the very same thing.
If a cards X, Y are not OP separately, but a combo X+Y is OP, than... the combo is OP. It's an easy and understandable term. If you start creating thousands or redundant terms, mastering the game will be harder than passing college. Think about the new users for a while, we are already using a weird jargon here.
And read the thread please. Even though a lot of users called Mitosis OP, they meant that Mitosis + Weapon or Mitosis + SoR is OP. All of the nerf propositions were attacking the combos, not the card.
This is my message for the community. Please keep the semantics clear and simple.