Majora's Mask is the definitive game to play if you need the Hero of Time contuinity, in my opinion. Link dosen't really develop or anything and the only thing he acomplishes(in my own theology) is saving Termina from devastating circumstances. Wind Waker tells us about the Hero of Time and such, but I think the reference is too vauge to make a "sequel" out of it. Hopefully, Twilight Princess may fill the gap and be the sequel you're looking for, I guess.