I agree. I really think if we're going to play as Zelda and
only Zelda, it should be as a spin off. For one thing, Link is a surprisingly popular character among the fanbase (Mostly with the ladies, but I digress). I don't think it would go over well with a lot fans if he were bumped out of the picture. Not to mention, she likely wouldn't control the same way Link would. If you notice, he can do some fighting techniques that... I don't know, man, they're just physically impossible (Spin attack, anyone?). It's fairly safe to assume this is a perhaps a power he receives from his triforce piece, and Zelda--not possessing this piece--likely wouldn't be able to do these moves. So, drastically changing the playing style would probably make it seem a little out of place in the main series. It might not be intended to be a spin-off, but it would probably feel like one because of this.
That being said, I would would absolutely
love to see some kind stealth-based spin-off game where you play as Zelda (Maybe as Shiek? :thinking
. I think it could be a really amazing game if Nintendo were to combine stealth with magical abilities. And hey, if Peach got her own game (Don't even get me started on Super Princess Peach!) I think Zelda deserves one too.
And if not, I'd actually be very open (Check: would fangirl like crazy) if we had little in-between segments where we get to play as Zelda. (Sorry if this idea-pitch is getting repetitive. I know I've said it a million times, but I'd really like to see it!) Think similar to the first two Paper Mario games with Princess Peach's little missions between chapters, except these segments would be a little more action-based and less just finding out things. Maybe Zelda could even sneak herself out of imprisonment
without Link's help this time, stealthily taking out guards via the Gerudo Fortress method from Oot? I don't know, I think it would be really cool to see the story told from two different perspectives, especially because I don't think Zelda gets enough of the limelight.