If you could design the movie what would you have in it?
I would go with Imp Guard vs Tyranids on an agri world, have a good ratio of cityfirhgting and open plains and forests, and for the coup de gras definitly have Michael Biehn as the IG commander. The climax of the movie would have Space Wolves drop pod in just when all hope is lost. Epic battle scenes of Leman Russ companies, Storm Troopers in Valks, artillary barrages, and guardsmen in final stands