Does look dated
This seems to look pretty old as it was in fact made in 2003, but it was still pretty enjoyable. The strong point was that the animation was bout as good as the old Flash Player system could give you anyway. It was also fun to see the characters being portrayed in a more faithful way to the games. I can understand your frustration with a lot of other Zelda flashes here. You could have made this longer, but it was supposed to be the series. At least the text and the sound effects were quite authentic.
The voice acting did seem a little off, but I have seen worse. This seems to be the setup of a fairly typical story, which as I said is faithful to the original tone. The color effects seem to be fine and I think it's really lines that you need to work with. The character designs look rough, but I am glad you went on to make the sequels. I'm impressed at how long this series has been going on!