I created this project some years back and the project just reached v1.1.0. I know most people have jellyfin servers and all set up, but if you have just a local folder of all your series saved up, you can use this to remember what you were watching.
All feedback is welcome. You can also contribute to the project
That’s fair, Kodi is way more feature rich. I love it personally but realistically don’t need to use everything Kodi is capable of.
Been happy with Kodi’s internal player but they do have configurations for external players including MPV https://kodi.wiki/view/External_players
BTW you should also look at Jellyfin, slightly different use case but it too is designed to manage local media including TV/Movies.
https://jellyfin.org/
And since you mentioned MPV that also exists with Jellyfin https://github.com/jellyfin/jellyfin-mpv-shim