i think a game featuring zelda/sheik (mainly skeik) would probably sell. just dont make it about zelda saving link. if it featured sheik individually i think that would be better. maybe show her side of
ooT. what she did durring the 7 years link was asleep, and while he was on his adventure in
ooT. and the could tie it up with the final battle in
ooT i mean sheik is pretty much an
ooT exclusive character so some sort of tie in to the original would be almost neccessary.
Maybe after zelda sends link back to his childhood, ganon comes back and zelda has to fight him again and finally banishes him for the time up untill WW. that would tie in nicely with explaining how ganon excaped the sacred realm in WW by showing he was able to get out once before on zelda right after link was sent back. At the same time it would elaborate well on
ooT's ending. but i doubt nintendo will do anything like that as they rarely tie zelda games together that elaborately. they have a tendancy to simply move on to a new story.