I'm posting this here as I don't think Ady would go for it on his edits but its open for anyone else to try

I was thinking of a way to join the 2 trilogies together, in as subtle away as possible, & I have seen some attempts on youtube where people have inserted footage of the PT into the sequence where Vader is watching luke get fried in RotJ & thought if this could be done with sound alone it would work alot better

Specifically in TESB, where yoda is teaching Luke to see time "old friends long gone" we could have padme say something like "I can still feel good in him" or have dialog from one of the cut scenes of Bigg's

another way to link the series would be to have Qui Gon say the line "No, There is another" but this one would depend on how you edit/interpret the PT in the first place.

If a slight echo was added to it & it was in the background it wouldn't really take away from the existing footage & could potentially be quite powerful if done right.