Re: Meanwhile
There's already a setting for that: Settings -> Library -> "Video Play Completion Behavior" and change it from the 95% threshold, to the end of the credits.
Yeah, not obvious to me either, but it's there, and probably why requests (by people who don't RTFM) are ignored.
I too bought a pandemic-priced pass for £75, but don't allow any remote access, so I only use it for skipping opening and closing credits. While it still works then I'll keep using it, but I installed Jellyfin in a VM and pointed it at my library, and it worked fine. That's where I'll be going if/when they wreck it.