Ok, first off, in my opinon, i think a zelda movie could go either way, because it would be hard to make a movie that would appeal to both movie goers and zelda fans, because face it, most of zelda is about puzzle solving, dungeon exploring, and collecting artifacts to progress the story, if the movie was strictly a movie version of this, it would be way to long and eventualy boring to watch, and regular movie-goers would hate it, and it would not do good. However, if they went to far off the zelda storyline and way, zelda fans would hate it and it would be just another crappy game to movie failure.
Now, why has no-one said this already, isn't ganondorf black? In the N64 games you just say he has a huge tan from being born and raised in the desert, but in the wind waker, and the demos seen from spaceworld 2000 (i know that never made it and became the windwaker, but still) He is undenyably black. Im sure in the realistic twilight princess, he will be black as well. So instead of all these white actors your naming (vin desile, johnny depp, the mummy) all of which i think would be horrible, shouldnt we be naming black actors, like wesliy snipes or something?
Also, for link and zelda, i say young unknown actors, putting hollywood actors in game movies as the star never work out, because it becomes about the actors and not the story, thats why I think the doom movie will suck.
in the end i hope this happens but it has to be done just right, the littlest mistake could ruin it for both movie goers and zelda fans.