Well, there was a good fan-art of Assault Krystal with the staff.
I'm not sure how Nintendo feels about Krystal from Adventures though. The game made it feel too much like Zelda, It was made by Rare which is owned by MS now, and the only reason it was made into a SF game was because at the time they were 2-3rd party to Nintendo and when the game went up to review the characters looked too much like SF characters, so Nintendo went and added the OoT engine and made it into an upgraded SF game of the N64DD Dinosaur Planet.
I think Nintendo wants to pull Krystal away from that title and make her a traditional SF character as they did in the two later games, even though Namco included DP in Assault.
Who Knows, Sakurai could be extremely cool and give us what we want, tradition, staff wielding and ****** Krystal.