ThreadSketch
Well-Known Member
Well, Lucas' plan had been to have Obi-Wan gradually pulling his sense of self back together over Luke's arc -- from disembodied voice to hazy and distant static figure to close and clear but still static figure to fully present and mobile and able to interact with the physical world -- and, ultimately, to step back across the veil to full corporeality when Luke faced the Emperor. Remember the full line he delivered to Vader in Star Wars was, "If you strike me down, I shall become more powerful than you can possibly imagine -- but if my blade finds its mark, you will cease to exist." It was a rare-ish discipline, in his mind, but a thing Jedi could do and Sith couldn't. Part of his problem with the EU was things like Exar Kun -- in his view, Sith didn't leave Force ghosts.
Anyway, that notion survived all the way up until he had compressed the rest of Luke's arc from four films to one and it was in story sessions for ROTJ that he decided having Obi-Wan come back would undercut Luke's triumph, and the "I cannot interfere" line was created. I, personally, like to think it's just because Luke would be confronting the Emperor in his Place of Power and the Dark Side would be too strong for Ben to manifest there. After the Prequels, I further like to imagine that moment as Ghost Obi-Wan steels himself, closes his eyes, takes a step -- and with a skin-crinkling effect, he's there in the flesh... Ewan MacGregor's flesh. Now-in-his-prime-again Obi-Wan looks down at his hands, raises his eyebrows, and says, "Well... I admit I wasn't expecting that."
I still stand by that he couldn't interfere because of the Dark-Side miasma surrounding the Emperor (and Vader?) keeping him out. "Piss off, ghost!" and that we never plumbed the depths of what Force ghosts were or were not capable of, but I feel "I shall become more powerful than you can possibly imagine" should have more clout than just "...because it will give the next Hero his burning motivation to kick your ass when he sees you kill me".
I didn't like, either, how EU authors had no idea what to do with Force ghosts, so just pretty much wrote them out. Of the things TROS did right, I do feel they reclaimed Force ghosts.
This particular scenario makes me reconsider "Force ghosting" (heh) less as a sacrifice/death and more like an ultimate enlightenment in which the Jedi could transcend the physical realm and literally give up their body to the Force to temporarily become a disembodied spirit. Like the utmost achievement or understanding of There is no death, there is the Force - they could step between existing with "crude matter" or without as a "luminous being" only.