Ugh, Banas. I'm out. I'm all for expanding the Amazon culture/reach/experience, but I -do-not-like- the hamfisted way of creating an Amazon culture outside of Themyscira's magical domain. It mirrors my resistance to using the Titans of Myth for reimaginings of Donna Troy. You can't just take a woman/group of women and justify that because one woman/another group of women uses a particular pantheon, another can be slotted into place. It shouldn't work like that, and I can't really participate in a conversation that suggests it's sufficient.
I think there's a very suspiciously clumsy perspective on race that went into the creation of Nubia. That's a very specific conversation that may or may not have occurred upthread, and it's not necessarily relevant to conversations that seek to reintroduce the character into contemporary continuity. You just need to excise the problematic elements and move forward.
Jason is just a bad idea. The only thing he and Nubia share is that they are called "twins" to Diana of Themyscira. While Nubia can be reinterpreted as a twin, a sister, a mirror image in a lot of ways... they're implicit that Jason is the biologically birthed twin of Diana. Though, I'm not collecting, and I'm very lightly following the current storyline. I think it's most telling is the reveal that DC Editorial mandates that male characters need to be added to WW storylines, and I assume Jason is just another iteration of that mandate.