That would end up being really odd, a bit like the episode of Buffy the Vampire Slayer when the entire episode centered around Xander and you'd catch glimpses of some major storyline in the background, or the episode of Dr Who which had the Doctor and Martha Jones running around, trying to sort out the problem with the Weeping Angels, meanwhile centering on Sally Sparrow. It would be a really bizarre movie - certainly not one that should be released cinematically, but could be made as a project with scenes from the movies spliced in to show how the movies actually integrate into the full story arc for the droids. No, I don't think that's how it is at all. I think the reason that Obi-Wan said, "he is our only hope" and Yoda retorts, "no, there is another," is because Obi-Wan hasn't spent any time in Leia's presence (corporeally, at least), so therefore he hasn't been able to feel the lurking Force-sensitivity in her, whereas because Yoda's affinity with the Force has always been so much stronger, he can sense it, even from Dagobah. Or at least that's the feeling that I always drew from the scene. My unpopular opinions: 1) The acting in the PT is diabolical - I know the Jedi are supposed to restrict their emotions to make themselves clearer-minded and less susceptible to thoughts of corruption and vengeance, but seriously, watch them back and see if you can garner any empathy at all with anyone other than Sidious. 2) The dialogue in the PT is shockingly bad - for example: Ugh. Really?