55-
Probably Evan Townshend
The way I see Jenova, she was a parasite, and never had any conscious thought or desire other than to destroy all life on Gaia and repopulate the planet in her own image. The reason why Sephiroth is so terrifying is because he's a little bit of that and a little bit of human. So, he's Jenova, but with all of the the conscious thought and the emotion of a human, and mad with resentment and anger and the desire for revenge. Crazy human + powerful alien.
But yeah, I think anyone's interpretation of the source material is as good as anyone else's, including the creators. (I think the thing we're thinking of where someone said they think that Sephiroth was using/piloting Jenova was an interview, but it's been a while for me too and I have no evidence to back that up.)
I think that things can be appreciated on their own regardless of any future clarifications or changes established outside the thing itself.
But yeah, I think anyone's interpretation of the source material is as good as anyone else's, including the creators. (I think the thing we're thinking of where someone said they think that Sephiroth was using/piloting Jenova was an interview, but it's been a while for me too and I have no evidence to back that up.)
I think that things can be appreciated on their own regardless of any future clarifications or changes established outside the thing itself.