I would like her with a bow as a little nod to her blade lord class.
But i'm fine with whatever they go with.
Also Eliwood would similar to roy (because I don't expect a horse in smash lol), Chrom would get the same treatment if his game wasn't new.
As for Hector, he'd play like an Ike, no doubt about it. even with an axe its still the same heavy hitting, high attack lag playstyle.
@gingerbreadman: Lyn is the best choice other than roy to represent the GBA series, plus she can have a very flashy playstyle (ala vergil). She'd be a glass canon aggro character that has good combo potential but lightweight and easy to launch if hit. That sounds more intriguing to me than chrom, lucina, hector, and eliwood imo. She can bring an awesome moveset to smash, which is why she's supported.
I know I've sorta repeated what others said before, but I thought I'd just say something.