Sorry, but I don't agree with either of those suggestions.

1. If you're going to replace Jar Jar's voice, you might as well replace the voices of the other gungans as well.

2. I never had a problem with the droid voices. To be fair, I could take the droid voices of TPM and AOTC more seriously than the ones from ROTS.

I think one of the biggest ways to fix the prequels is to fix the romance, especially in AOTC. IMO, that was one of the worst parts of that movie.

If only I was old enough to have seen the imax cut of episode 2...