How did Marluxia even know of Namine's existence in the first place? I always wondered about this for a LONG time because Namine had just been born right around Sora's encounter with Castle Oblivion so how did Marluxia even have the time to find Namine and use her powers to meddle with Sora's memories?
Namine was born in Castle Oblivion. And she was born when Sora stabbed himself in the heart. That's a perfect amount of time to find her in Castle Oblivion and use her powers.
Why is Namine blond in the first place and not the sort of reddish hair like kairi?
Nobodies often have slight physical differences from their original selves. This is stated in the Secret Ansem's Report. For example, Axel has the markings under his eyes while Lea doesn't, Xigbar has longer hair that has gray streaks in it while Braig doesn't, Xaldin's hair is messier than Dilan's hair, etc. As far as we know, Namine has blonde hair simply for this same reason.
What if (here it comes) that Namine is VERY similar to that connection that being that she has the identity of Strelitzia's face and not Kairi's? Think about it, if you look at both strelitzia's and Namine's faces (other than the color) they do both look quite similar and you will also notice that they both have a white-ish kind of skirt on so theres a connection too.
I'm honestly surprised a similar theory like this wasn't even made like 5 years ago because if you look at Namine's and Kairi's faces they are not as alike as you would think. (kind of like when you compare Roxas's and Sora's face in KH2 which from that aspect I would have assumed people would think Namine's face was actually someone else's).
Namine and Kairi literally have the same character models aside from clothing and hair. Namine in Re:CoM has the same model and the same face as Kairi in KH1 and Namine in KH2 has the same model and the same face as Kairi in KH2.
With the fact that Roxas is for SURE gonna return in KH3, why not bring Namine back as well but through this method? (I do realize the frustrations with Roxas being back in KH3 and I can only tell the same frustrations will be with this) but come on, I feel like Namine compared to Roxas needs more of that screen time. I mean who else will the community ship Roxas with if Namine's not around?
There's no doubt Namine is gonna return in KH3 as well, but I doubt it'll be through this method.