Mithrandir said:

Now suppose Ady finds, or designs, or inserts in PT:R some ship meant to be a Republic shuttle, then he could use it again in ROTJ:R as the old ship the rebels use to infiltrate...

I like the idea of that, seeing perhaps a pristine shuttle at the birth of the Empire and returning in ROTJ a bit dog-eared....when i heard that the Falcon was to make an appearance in ROTS, it looked exactly the same as we know it...only with a different paint job!.....its a pity we couldn't have seen a YT-1300 without any of Han's modifications....less than a piece of junk...with no missing panels etc.