There is currently no option to restrict scraping. However, I would be happy to add such a feature for you. I will see what I can do and publish an updated version!
EDIT: A new version has been published. You may specify "--no-trailers" or "--no-samples" to ignore the downloading of trailers or sample images respectively. This version also fixes a small issue with uncensoring words. If you have any issues, please let me know and I would be happy to help you!