Another thing is, I know it's tampering with the original art but I remember someone had changed Lukes saber to green in the poster, sounds strange but I thought the look was actually an improvement..
I like the idea of using an alternative poster art as the backdrop on the rear cover, but personally I agree and wouldn't use the filmstrip, sometimes the less added, the better the results are, but that's just my taste, another small pick is the gray strip, have you tried other colors to see what you like best? ever considered putting one across the top on the front, in simlar fation to the official DVD's? (sometimes small things like that add to the overall appeal.)
I might have a HR image of that Revenge poster, I'll do some digging.
Like what you've done, I'd like to see the others!.
EDIT: I missed where you mentioned not wanting to keep the green saber above.