With SW there was a single plot thread (Luke/Han/Leia). ESB had two threads (Luke, Han/Leia). I think there was a draft of ROTJ in which Leia led the Endor mission while Han piloted the Falcon in the DS battle and Luke faced Vader/The Emperor. This would have worked better for me as it would have been nice to see the original three heroes each having a separate responsibility and then being reunited at the end. That and having Kashykk instead of Endor. And Luke doing some training.
With SW there was a single plot thread (Luke/Han/Leia). ESB had two threads (Luke, Han/Leia). I think there was a draft of ROTJ in which Leia led the Endor mission while Han piloted the Falcon in the DS battle and Luke faced Vader/The Emperor. This would have worked better for me as it would have been nice to see the original three heroes each having a separate responsibility and then being reunited at the end. That and having Kashykk instead of Endor. And Luke doing some training.