Two things:
First, I want to clarify my ideas about the Han/Leia theme. I don't mean to say the Han/Leia theme should replace Across the stars-- I actually like this AOTC theme (although it's mis-timed) in the Geonosis kiss scene. It's just the fireplace-scene, where the main theme isn't even being used, that I have a problem. The echo of a Han/Leia theme there (a variation- a hint of the theme-- not the theme itself) would lift this troubled romance from it's current D.O.A. level to something inspired and harkening to the OT. I don't want to over-use it -- just get a whiff of it. Clue the viewer into the clear parallel. This Vader romance foreshadows the Han Solo romance in the "later" film -- why not tap into a little of that musical power? Just a little.
Second, I appreciate the idea you have, TM, of adding a new line to the Obi-Wan/Anakin shouting match that says "I won't lose her like I lost my mother!" I feel that this line has potential, but it also might sound forced. Like the soliloguy, I say try it and keep it if it works. My gut tells me it's probably too much. He might as well say "You kept me from saving my mom-- you won't stop me from saving my lover!" I don't know.
Anyway, my whole neighborhood is keeping you in their prayers at night, Trooperman. May the Force be with you and all those midiclorians in your blood.
mthaslett