Candance didn't work to improve the story or the dynamic like like Tilly [almost like very old white men aren't the best to write young black girls]. She should have just had Tilly's role because all she did was complicate the story. The Supersons title doesn't need a brand new protagonist.
They are supposed to be the protagonists. Not to mention that the Supersons has Maya and Kathy as part of their cast. So just like Arthur was utilised in Mera's title perhaps the supersons writer should have used Maya or Kathy.
Although I suppose the writer of Mera has the edge that they knew about the source material unlike the supersons guy.
But I see your point on How Damian's mixed origin isn't ever acknowledged in the Supersons.