Would it be possible to add the option to mark/flag an episode as 'Season finale' (maybe even Mid-season as well?) and/or 'Show finale', under 'Primary Facts' when editing an episode. This option should of course only be available, for the last episode (and in the last season, for show finales), that's been added to a show on TMDb. Additional (also to have this easily added to all shows, already in the database): Automatically set the last episode of a season as a season finale, IF a new season has been added WITH a release date for its first episode (As far as I know, a new season release date is never known, before the current season finale date). And once a show status is set to 'Ended/Cancelled', then automatically set the last episode (AFTER all have aired), of the final season, as the show finale. By letting your system use this logic, a lot of manual labor and accidental forgets can be spared.
Such a flag or mark could be used (if not by TMDb, at least by TV guides/trackers who use the API) to automatically highlight an upcoming finale and allow for filters for seasons/shows, which are fully broadcasted. Also, for shows which are ongoing but paused or shows with only partly released episode schedules (and therefore not yet fully added on TMDb), this info could also be used to clarify for users, that the last known episode on the platform, isn't (necessarily) the final episode.
Hope this will be considered! Cheers