Allowing lists to be "locked". So a movie can't be added or removed from the film page. It can be annoying when a list is "complete" (ex. a film festival or the Top X from year Y) and by mistake I add a movie who has nothing to do in this list because I clicked the wrong one. It hold no sense to propose me to add the movie to a list when the list is "locked" or "finished"
Not a super common use case, but we’ll investigate in the future.
I just accidentally added a movie to one of my lists (which happens to be featured by Trakt, so that could have been really bad).
This would be very useful.