Set up a "global" ignore file that gets synced between devices. Call it .stignoreglobal for example and and change the .stignore file (which doesnt get synced) on every device to only include #include .stignoreglobal. Now your ignore state gets synced between devices and you can make changes from anywhere.
Make sure SyncThing is excluded from your phone's battery optimizations (varies by vendor).
To save on mobile bandwidth I have it set up to only sync on WiFi.
You can set up a symmetric key (basically a password) and sync your stuff to a friends instance. Your friend will not be able to read the data without the key (make sure it's a long random string). This also helps if you're running a SyncThing instance on a VPS for example.
I've just checked and apparently I only use first-party plugins, so I'd probably not have any issues. I'll still delay the 10.11 update for the other reason I mentioned.
I think I'll add an exception to watchtower, so my Jellyfin image doesn't get updated to the full release when it comes out. I'm really fond of my plugins and the fact that the "seen" status doesn't change when replacing the underlying video file.
What happens to software that listens on an external port (0.0.0.0:12345)? Does a hidden service automatically get created for it? Or is this strictly a client tool?
Is that still done with that Mangos software?