Add/recover show/movie to/from hidden items list directly on items page or calendar page

Here is my reasoning:
I check/discover new movies/shows usually from calendars: premiere/new shows.
Any show/movie that I am interested I put in one of my lists and use filter to hide those items, so it doesn’t show again in calendar, and any show/movie that I am not interested I simply hide from calendar and is put in settings>hidden items list.
So, in calendar are only left items that are either newly added or i haven’t decided about them, and that works great.
Only problem with that setup is that my settings>hidden items list is huuuge, I can’t open it to unhide an item from it without getting gateway time-out.
So, if i mistakenly hide show/movie i can’t unhide it anymore.
I wish to have a button on show/movie page that can put/remove that item from hidden items list, or to add an option to show or hide in calendar items that are put in hidden items list).
Any better solution for this problem is welcomed.
Thanks in advance.
Dalibor
ps. if we could choose to hide from calendar item by specfic lists than hidden items list could be just another list of “my lists”, wouldn’t be needed as a separate setting.