Genre deflation (assigning everything isn't helpful)
The two most problematic Genres are "Drama" and "Comedy". Because almost every move has some drama and almost every movie has some humor they are incorrectly assigned causing misdirection.
The Babadok, The dark knight rises, Rambo, The hateful eight - a few examples of movies tagged as Drama - while I am sure an argument can be made, that is not what people expect when they ask for a drama to be recommended.
Hartbreak ridge, Focus, Lethal weapon, The cabin in the woods all have some comedy, but not what one would expect when you look for a comedy.
Thanks for your suggestion. Changes to our genre system would be interesting, but very difficult. Currently all our genre data comes from TMDB, therefore I don’t know that we can make this change, but you could look over to TMDB and see if changes can be made there.
You could also look into supporting the MovieLens tags and see if the tagging system better suits your needs.