I'm actually the opposite. Was very girly growing up, but now I act more like "one of the guys."

Fuuna...Lagury...Jaine...Rulia...All of those are pretty awful. Jedea is definitely better, lol.

I thought about Nida, but I think that'd be kinda difficult, since he has next to no personality (and is apparently pretty average on the combat side, according to Cid). What I actually came up with was Zell - he's present at that point of the game already, restless by nature, would chafe like mad under Seifer's leadership, and is shown to be very close to Edea in the game. So the party would be Seifer, Fujin, Raijin, Selphie, Rinoa, Irvine, and then Squall. Quistis would make cameos, much like Ellone. Speaking of which, there would be no reason for Elle to send the team into the past, since she would have never gone to the Orphanage and whatnot.

I imagine a non-emotionally screwed-up Squall would mostly just be quiet, sarcastic, and very blunt. I imagine him having a very dry sense of humor, lol. You're right about the scars - I'd have to put them in somewhere, just not sure where.