(betting against a double post, cause I'm assuming there's going to be a response before this is finished)
Elysium: The issue with the staff is that it virtually comes with its own moveset. Special attacks go along with the staff magic from Star Fox Adventure, even with its own ^B. There's no reason NOT to use the staff. Non-staff is possible, but her telepathy (from what we've seen) seems to be limited to clairvoyance, nowhere near the abilities of Ness or even Zelda (if you can call her throws telekinetic).
The reason Fox's moveset was completely made up for Smash is simply because no one's seen him out of the cockpit before Adventure (I'm not counting SF64's multiplayer mode). And in Adventure, the moveset he uses...actually belongs to Krystal (she tells him how to use the silly thing in the first five minutes after Fox lands, and she takes it back at the end of the game). We can infer, then, that Krystal can do everything Fox did with her staff. So we have a pretty good idea of how she can fight. In fact, a very good idea. "Because it doesn't match her looks" is a pretty terrible excuse to throw out a move pool with such high potential.
(edit: sorry for the double post, mods)