You know what would be cool? If Ganondorf could have a stance-change system like Samus does.
Let's say he uses the Sages' sword like his Brawl model does. I don't see him using it in a lot of his attacks, just like Samus doesn't spout fire from her arm cannon in all of HER attacks. Nonetheless, when Ganondorf uses the sword it's very disjointed, covering a nice area around him. If you press down-taunt, then he'll examine the sword for a moment before using dark magic to turn it into the Trident of Power. Then, any moves that used the sword now use the trident instead and, since it's not a swinging weapon, it exchanges the sword attacks' disjoint for the trident stab attacks' reach, covering places far away from him instead.
Essentially, Ganondorf could switch between slashing with the sword, or stabbing with the trident. Range vs. Reach.