Yeah, I know your original post was made quite a while ago, but I would like to ad that I too am interested in this.
Not even sure if you are still working on this, but if you are, for extras you could toss on the disc, the adverts that are shown in the waiting line, as well as a cam of the waiting line (should be plenty of these, as the last time I was there cameras were allowed in the line). The advertisements I am talking about are "take a vacation to Endor/Tantoine" ads that play on a loop on large screens right before getting to the room full of droids.
I think those would be good additions to the disc.