I'm rather neutral on the thought of voice acting in Zelda. I only got into the series last year, so what older Zelda fans might call staples to the series, such as silence and text, I can actually care less about them. I think voice acting can work well for the series. Even if the voice acting turns out horrible, it can still be a step forward to the series because it shows that Nintendo did consider it, and if voice acting is to be kept, they'll improve on it.
Plenty of other games used voice acting and it worked well for them, such as Metroid Prime 3: Corruption as mentioned above, though I still haven't played it yet, and some others, such as Super Mario Sunshine, excluding Bowser, Bowser Jr., and Princess Peach had decent voice acting.
Also, for those who try to mention the CD-I Zeldas's voice acting to oppose the thought, obviously they're going to get better voice acting than that, so there's no reason to try to bring that up.