That would be directed to you mi amigo.
Why pretend a concept is right, when it's wrong?
Well, seeing how we both have different views on what matters here (Nomura and his half-@$$dness as opposed to what's actually in the games), I think the discussion is pointless XD;
I'll conclude by saying that Nomura brought up many, many concepts but many of those changed over time as well (my favorite example - KH1's Ansem being the Ansem, yet Ansem the Wise came as a plot bunny at a later date).
Who's to say Namine isn't just another one of those, especially seeing how she still has so much untapped potential? And unlike other characters, like say Kairi thus far, Namine actually gets enough attention to try and utilize that potential.
Seeing how she's not completely gone, there's hope for her yet.
No, it's one of those things that DID change. I'm just saying that's why Namine has a different name than Kairi, despite the fact that she's Kairi's nobody. [Which was retconned]
Do you understand now?