I get what you say, 6 years is a long ass time for any game. But again, the VN went under a rework. I'm not even taking in consideration Ocean's reworks, but the one that transformed
'Regium's SG' into
'Ocean's SG'. If we take that in account, not too much time has passed in the story, so revealing right away who Nami and Nika are right now at this point would be like, for example, revealing Harry Potter is a horrcrux during the Prisoner of Azkaban. Just because we as spectators have waited 6 years, it doesn't mean enough time has passed in the story to justify an early revelation.
One of the things I agree with you is that the waiting fucking sucks. Had I been a dev, I would focus first on finishing the whole VN and then do the rework (take Chasing Sunsets for example, the early renders look honestly veeeeeeeeeery bad in comparison to the latest updates, but the dev is focused on developing the story). However, I'm not in charge of Ocean's VN so I won't be bossing him how to do his work, and the reworks had to be done to sell on steam. The waiting is gonna be rough and I can only hope I'm still alive to see the end of it
, but if I don't I still have other VNs to focus on and follow their stories. Still love SG and the pacing, but I won't come here bashing it out of frustration when I can focus on other VNs.