I *love* Jar Jar's new voice! It gives him a new aspect to his character and a an edge, but there's still a recognizable hint of the old voice, an homage, almost...Can't wait to hear more! I understand reservations towards "earthiness", but that's a little unavoidable...besides, Jar Jar ought to have a more specific accent fitting his rather, er, specific character.
I'm less enthusiastic about the Feds' voices, it's an interesting take, but I personally would picture something a little more sinister in their vocal character.
All in all, I'm loving taking fan editing to the next level with voice actors and dubbing! It's quite exciting thinking of the possibilities and new story avenues afforded by it. Now on to Anakin and Padme!