hehe, I somehow imagine the "blow-up" scene would have an extreme effect if used in ANH - after Alderaan destruction, maybe as a interlude to Obi-Wan having his "breakdown" ...

well, on how to end RotJ: it depends, honestly if one wants to just do a SE of the OT, it would look different than a "saga ending" (meaning PT+OT) *

I like the open-end one, because it leaves space for the ST (if one likes to watch them afterwards and one edit has the "canon" intact)

* that would look a little like "Hobbit + LotR" combined, with a grand opening and an epilogue (to leave the GFFA for future generations)

not sure if another "zoom" through the galaxy is that fitting (having the end of MiB in mind), it doesn't really sit well with SW ?

BUT I like the idea of Fett being a last picture (or after credits), like was in "Flash Gordon" ;-)