Can't believe Stremio has a feature that Nuvio doesn't
Native NNTP.
It allows you to stream Usenet files directly. Not through your server (which is what AIOStreams does) but directly from the NNTP service provider to your end client.
This means your server and internet speeds don't limit your streaming speeds.
It never goes down and has content much older and much more niche than Debrid services.
For now I'm using PM, but even their cache doesn't compare to Usenet.
Stremio implemented native NNTP functionality earlier this year. Very surprised Nuvio has not yet.
From the GitHub repo, it looks like it's not even being considered unfortunately.