Unless I am doing something wrong, you should also use WPD and Winaero Tweaker, and preferably Windows 8.1 or lower, although that can be debated down to 98.
Does this introduce basic UX changes, like saying that a media will be permanently lost instead of "will be removed from Jellyfin" which is inaccurate?
Edit: And making it more secure? Just because it is commonly for LAN doesn't mean it can be insecure
XMPP, as Matrix is pretty much centralized, unless you're fortunate enough to register outside of matrix.org. Both xmpp.org and jabber.org is no longer open for registration.