Less is always definitely better. But, I guess Lucas wanted to show more of the Star Wars universe. I can't fault him for that. Clearly, he has a much more invested interest in Anakin than Luke. And because I've always been a Darth Vader guy than a Luke guy, I can watch them numerically.
And to this day, I'll give Return of the Jedi the benefit of the doubt. I'm telling you if Lucas had the money, time, and technology to pull of Kashyyyk and the Wookies, Jedi wouldn't be getting crucified as it does now. The Han situation, along with the Ewoks is interesting, because Lucas took alot of criticism after Episode V was released for it not being as fun as Episode IV, hence the feel of Episode VI.