TCTTS said:
Re: Vader hardly getting any screen time, I agree with Simplebay. The way they've treated him in the trailers is really, really weird, and the only thing that makes sense is that he's hardly in the movie at all. I think his presence will definitely be felt at all times, and that he may have a cool little moment or two, but that's about it. I'd be shocked if he has more than five minutes of total screen time throughout.
I think they definitely have him off people, maybe even in a cliche way:
Something like they are trying to escape, then Vader shows up. Several stay behind to "hold him off". We see Vader calmly walking, then his light saber ignites, shots begin to be fired. Flash back to the group escaping. As they fly off, screen goes back to Vader who is watching the ship fly away, who then turns off his saber.