fix rank by average rating to put films with no rating last and add a minimum number of ratings option.
For example, when you go to http://letterboxd.com/films/decade/1980s/genre/horror/by/rating/, you'll notice that after a few pages, there are films with no views or ratings that are still showing up before some movies with thousands of views. It would also be nice if, when sorting by rating, there was an option to filter out films with below a certain number of ratings or views so that movies with only a couple of high ratings aren't showing up so high.
Alexander Waldemar commented
The problem with that is that you won't be able to easily find the lowest rated films