As much as I'd like for both Ghirahum ad Vaati to return in future Zelda games, I believe the story that needed to be told regarding them is complete. Also, certain circumstances in the games they appear in hinder them from returning. All logical arguments aside, I'd very much like to see the return of Vaati. He's arguably my second favorite Zelda villain after Ganondorf. Not only was he an exceptional sword fighter and wielder of magic but he was also extremely clever.