Part of the problem is finding that happy medium inbetween listening to what fans want/expect out of a fan favorite series, and trying to innovate. It would be too easy for a developer who just got their hands on a long loved series to either box themselves in based on fans expecting it to be exactly like previous versions, or trying to make it "their" game and making it unrecognizable.
Like, while I still agree with my earlier post that Naughty Dog could do a good Zelda. Naughty Dog is still Naughty Dog. They've been doing some great voice acting games, and have long since moved past silent games. So would they give Link a voice? If so, does this ruin the experience, or are Zelda fans just overly cautious to change with giving Link a voice possibly being an improvement.
To be perfectly honest, I haven't bought a Nintendo console in awhile (atleast not new, I bought a Gamecube near the end of it's cycle), because I only care about very few games. While I still loved their handheld titles. Zelda's about the only console exclusive title Nin puts out that I still care about. I also have strong nostalgia for the series. So I'd be happy if it always stays a Nin exclusive, even if I miss it (still haven't played Twillight Princess, or Skyward Sword) as Nintendo does it justice.
That said, I do wonder sometimes if some changes could improve the series. I fell out of caring for Mario since it feels like every game has "been here, done that", it all blurs together. Zelda is just so well done to me it's avoided that, but it's really remained pretty untouched innovation wise. Which is a pro as it speaks to a rock solid gaming core, but eventually I do want to see the series grow. Nintendo sometimes gets stubborn with change though (see online).