We're not saying anything like voice acting is the only avenue for Zelda to advance by, or that we want to Zelda to go down a cinematic path. It's just outright stupid that Nintendo won't advance with the times and give Link a few speaking lines (he can be quiet! Just not a mute!) and give the series as a whole voice overs for the few cutscenes it does have.
The series really shows its age when it comes to story. Calling pre-rendered cutscenes and voice acting gimmicks is a shallow argument because they put characters into the gaming experience. They solidify the characters and how they talk. Keeping things like that open to interpretation only weakens the experience - making characters more, you know, characterized strengthens the series as a whole. There's a difference between a purposeful void and an unpolished, sloppy job.
You say you don't want Zelda to be more cinematic but this is exactly what you're describing. Cutscenes take control away from the player, and force you to, in essence, watch a poor imitation of a movie for a couple minutes. How the characters talk is irrelevant to the gameplay. Personally, I'm baffled that people are looking forward to the story of Skyward Sword when it's clear that they are trying to revolutionize the gameplay.
In fact, I'd even go as far to say that this heavy focus on cutscenes (that more or less started with Final Fantasy 7) is holding video games back as a medium. Video games can do something that no artistic medium can, and that is utilize player interactivity with the medium. By their very existence, pre-rendered cutscenes take this away, and instead try to ape other mediums like film.
Link isn't a typical fiction character. He's our avatar. Constructing a personality around him would make the series much like every other game that's out now. And often times that doesn't work.
In Grand Theft Auto 4, the main character has this whole super serious plotline and characterization, where he is remorseful and hesitant about killing people. The cutscenes harp on this point over and over again. Then guess what? After the cutscenes are over, what do we do? Go on a rampage and murder hundreds of innocent civilians and cops. Oh no, now Niko's acting out of character! Do you see what I'm getting at?
Besides, what kind of personality would Link really even need? He's the kid that saves the world. Why do you need more? Do you want him to have the angst and whininess of the Final Fantasy protagonists? Do you really need a couple of voice acted lines that confirm that, yes, he DOES want to save the world? The Zelda series is archetypal by nature, as a means to identify with everyone and to focus on gameplay over story.
Which is what games are about...or they used to be. If games like Heavy Rain become the norm than I fear that true gaming is dead.