Hmmm.... The wookie planet......The Ewoks to me are the only weak link of the OT. Now thanks to Jar Jar, I don't hate them nearly as much, but a wookie planet would have made ROTJ cooler. That is all, it just would have been less kiddy. I understand Lucas wanted the Ewoks to be like David vs. Golaith, but he made them just a bit too cutesy than they should have been. But as I said, the kiddy crap he put in TPM, the Ewoks in ROTJ don't seem all that bad now.
What if he digital enhanced Gungans to replace the ewoks? I think we would storm the gates of LucasRanch!