Leekslap, you should totally check out a book called "How to Win Friends and Influence People". I highly recommend reading at least a few chapters of that book that, it helped me IMMENSELY.
I know what it's like to feel crummy about posts and comments I wish I could take back on message boards-- I'm certainly guilty of making my fair share of less-than-informed posts and threads on other sites. I used to post more frequently on gamefaqs under a different username, haha. But yeah, it's a great book that really helped me out in real life as well as on the internet. I've still got a long way to go though, because nobody's above slipping in this area, myself included.
This isn't a diss or an attack on you in anyway, in fact I recommend this book to anybody on Smashboards.
Back to the subject, if F-Zero gets any other character, Goroh is my most wanted pick. I could see him having Falcon's throws with Marth's aerials, except for his Nair, which would be like Falcon's.
Better yet, they could give him a boost meter, like in the actual F-zero games. Not too certain on how it could work. Maybe he could pick and choose when he's able to move and combo very quickly, but takes damage when overexerting himself. Maybe he'd be a character that rewards patient play and good reads/punishes.
I'm sure there's an idea in there somewhere. Hmmmmm...
EDIT: Expanding on that... Maybe Goroh (or even Black Shadow) could play like a slower more powerful character who was able to temporarily "boost" their agility and speed and be as fast as Falcon for short periods of time. Overusing this ability would damage them heavily or even destroy them, forcing the player to be careful. The meter could be restored by pulling off extensive combos and getting stocks on opponents. Just a thought.
EDIT 2: Another possibility is having the boosts work the way they did in the original F-zero for the SNES, where you could carry two or three (for Smash, I'd just say two for the sake of balance). You could use the boost whenever you wanted, and you could get an extra one for each stock you took (you could carry a maximmum of maybe three). Stop me if this sounds too broken, lol