The more I think about it, the more I am convinced that Obi-Wan's unfamiliarity with the droids, despite my involving them all in a PT, can be explained by just the thing that Tiptup mentioned:

Originally posted by: Tiptup
Obiwan never struck me as a guy who would have ever been close friends with droids. Any droids. He's just too amazing for that.

Obi-Wan just doesn't come across the droids much. It's as simple as that. You don't need to establish any more than that to maintain the integrity of SW '77. If we run with the idea that Jedi are celibate, monk-like people, leading simple lives of meditation and training with no accumulation of possessions, then it is unlikely that Obi-Wan or Anakin would regard them as any more than luxury objects. If the droids were to become in some way thrown together with Padme that would bring them into the story we're concerned with.

That's an interesting thought - why couldn't Padme be the central character of the PT? Female characters are rather poorly done in the Luca$h PT. Maybe we should put a strong, rounded Padme centre-stage in the PT? Only thing is, that name gets annoying even over the course of one film, let alone three and would be unbearable through three books, probably! I think that would have to go...

What do people think of shaking things up a bit and putting Luke's Mum centre stage for the PT?