I'm good for an occasional idea, but I don't have any editing skills myself (or time, for that matter).
To be honest, I was thinking of a less dramatic edit to ANH that might still work in the scheme of the Starkiller Ranch edit. Like this:
The attack on the Death Star can still happen, and Luke still makes the shot, but the explosion only disables the Death Star, and part of it survives. (This would of course require new effects on the Death Star explosion scene.) Maybe we can redub General Dodonna so that before the attack he says "A direct hit should cause a chain reaction that disables the station"). Then we still get the end celebration, since the Rebels have saved the day for now.
Now here's a new part I just thought of. Move the ROTJ opening scene over Endor to the beginning of ESB. (I've always felt that the opening for ESB was a little weak.) The Empire has already started repairing the station. This keeps the Death Star in the story, so it doesn't feel so rehashed in ROTJ. To spice things up, see if it's possible to replace Endor with Mustafar in this opening shot.
Vader lands and tells the new Grand Moff that he's there to get the project back on schedule. Cut the mention of the Emperor. Cut to Star Destroyer launching probes. Then use the ESB Special Edition shot of Vader's shuttle approaching the Super Star Destroyer to get to the fleet, so he has time to check out the fleet and then get the report about the rebels on Hoth. Continue with rest of movie as planned.
For ROTJ, start out with a new opening shot, or maybe heavily modify the original opening shot and have the Emperor show up at the beginning. Commander Courage's idea about moving the Dagobah scenes to the beginning work well, so maybe a new opening shot panning down on Dagobah would work.
Regardless, I really hope somebody can use some of these ideas.
Erik