I would appreciate if you could add a search bar in the watchlist, more specifically the plan to watch list, for users to search for different tags and genres on the different shows and films. This would be more efficient for the user as it would allow them to search for a dramas/films based on the selection they already wanted to watch at some point instead of having to search for a drama/film from a much larger list or having to click on every individual drama/film in their plan to watch list. An example of this would be if a user had a large list of plan to watch shows which included an array of different genres and tags but only wanted to a sad drama/film they could search 'tearjerker', similarly if a user wanted to watch a romance film/drama they could search 'romance', etc.
I hope that I that I explained this idea well enough.