Riku needs a car (or motorcycle) as his Keyblade Transformation lol - just imagine him running over enemiesHonestly with the introduction of keyblade transformations i would like to see the different wielders establish secondary perfered transformations. Like Axel still using his chakrams has his perfered keyblade transformation.
I could see Aqua having a Bow preference, Kairi a bow staff or crossbow preference, Riku an axe, Roxas twin daggers, Ven a spear, Terra a whip and and I'm drawing a blank for Xion, maybe battle yo-yos?