The Noctis that Nomura envisioned was a huge douchebag. I like the one created by Tabata more. I don't like another emo teen story with Noctis after we already suffered through Sora.
As you said, we barely knew about both Noctis and Stella on Versus so I think it's a stretch to say that he was going to have "another emo teen story" or is a "douchebag" in the Versus game. At the very least, he was a much more grim and quiet character, which I'm not sure if I'd like to be honest (I didn't want to play through another Squall).