Please remove the mandatory uniqueness of Heroes that have family. For example, if I have two or more Mermans of Atlantis, currently they will not get the family bonus because they are not unique to each other.
I say that since they are both comrades of the same army, then they should still get the family bonus.
Otherwise I am stuck with a redundant Atlantean hero that I wasted my gems on, as if all the obsolete classic Heroes weren’t bad enough on the Atlantis summons.
If you’re using in war or Ninja tower, a second copy can be useful anyway. In any case, you have to balance your roster size with how many heroes you want to keep. (Most of us have fed off LOTS of Atlantis 3-4-star heroes.) There is of course nothing stopping you from using two Mnessus on a team. They just don’t get a family bonus.
Personally, I’m happy with the family bonus as it is, though about a year ago, I would have reasoned as you are, so I understand where you’re coming from.
And as I said, it still makes no sense for there to be no family bonus from a purely logical perspective. Armies have more than one soldier. And these soldiers help each other.