Hercules: The obvious place for this would be a Greek pavilion in Epcot, but Epcot's World Showcase is already Euro-heavy. In addition, Epcot seems to emphasize education and original content over blatant Disney movie themes, and that's a nice balance against other Disney parks.
Tarzan: I eliminated this because Tarzan replaced the good Swiss Family in California and I don't want that to happen in Florida. This could however make a decent addition to the Africa section of DAK.
Mulan: Like Hercules, this would fit best in Epcot, but China's pavilion is fine as is. However, the movie could make a good attraction of some sort, so if anyone else has a good idea for making a thematic fit elsewhere at Walt Disney World, I'm all ears.
The Hunchback of Notre Dame: Obviously a good fit for Epcot's French pavilion, but France's pavilion is already fantastic. I couldn't think of any other good place to put this.
Pocahontas would make a good addition to either Liberty Square or Frontierland in the Magic Kingdom. The story has about equal weighting on the romantic angle that might appeal to girls and action and adventure that might appeal to boys. The same could be said about Tarzan, so that makes it a close second. Ultimately, these movies probably aren't the best example of Disney's Renaissance. Beauty and the Beast, Little Mermaid, Aladdin, and Lion King are all even better, but they are either already represented at Walt Disney World or will soon be.
Regardless, none of the choices needs an attraction. Keep the attractions original.
I didn't really like any of the movies that you had listed.
Though Pocahantas would not be bad at Fronterland.
Speaking of that, Pocahantas and her petting zoo are already at DLP
And no problems voting in firefox on my android phone.
One thing that really made it unique was its story was that the cast of Tarzan was on a rock concert tour and happened to stop at DAK. This made it unique to the movie, rather than recycling the same story of the movie. I would love to see this show re-mounted somewhere.
Perhaps a Spiderman like attraction?
I also wish that I could see the voing in the polls before/without actually voting.