On a more serious topic, I vaguely recall an interview with Joss where he stated something to the effect that he only had two hours to play with in the movie, and with 8 people in the cast, some folks were going to get shortchanged in screen time. And it sounds like "some folks" translates to "Ron Glass". (I'll also note I have yet to even see one of the trailers, so I can't comment on that.)
As for the spoiler, you'll need to wait for me to kill someone else first.
Well, we'll know in about 53 days or something. I hope he's not too short -- loved Glass in Barney Miller, liked his character in this. And I want to find out what the heck his story is!
I liked the earlier interchange between Book and Inara. Mal's on a dangerous mission, Book wishes he could do more. From memory:
Inara: Well, you could pray for him.
Book: I don't think Mal would appreciate that.
Inara: You could not tell him. (Pause, then lower) I never do.
Dan
That is my worry - the difference in formats.