I like the idea of getting a movie out. And have it start with the boys getting back to Earth to find it's dead and empty. Maybe humans have started a new life in the colonies in the stars and they're on a hunt to find other humans, either way I agree with you that going back to Earth to live out the rest of their days would be too bland.
Also I want Hollister back, last time I saw him was in an ad for Big Al's burgers proclaiming "IS THIS A BURGER I SEE BEFORE ME!" and I would very much like to see Mac McDonald have something a bit better on his resume.
But yes, I really want the movie, the show'd adapt to the big screen very well if time and care was taken