It would be great to have a feature that allows you to stop tracking (watching) a series. Sometimes, you may decide to stop watching a series, but you don't want to remove it from your viewing history. Having a function like 'Stoped/Dropped Watching' would be helpful to simply remove it from your progress but keep it in the history.

Add Critics and Audience tomatoes score to movie homepage

This is especially true for those who learn a language from movie

Private notes for any movie/serie on watchlist

Right now, stats are very basic. Important new ones could be how much chapters where watched per week

Show the profile of a friend, including their lists