I was just looking at the episode list of Hannibal season 3 to see how many episodes there were left and saw some major spoilers in the thumbnails which made me think that it would be a good idea if there was an option to hide thumbnails for unwatched episodes
Thanks.
Yes, this would be some sort of "spoiler" option. I would think it would hide overviews, thumb images, chapters (what else?) for any unwatched episodes.