Odin doesn’t play local content, instead it gets the streamable media directly from a debrid service like RealDebrid

It doesn’t. It’s nothing like any of these two. They provide local media content, Odin on the other hand streams media directly provided by the debrid service.

So, no downloading and hoarding involved.

no local media collection.

It doesn’t download anything and also does not fetch any local media. It uses jackett to scrape sites like 1337x.to for magnets, sends these magnets to realdebrid/alldebrid and gets a streamable link back which you can watch instantly.

By arr-suite… I meant the automated setups that people do, to get stuff downloaded directly into the movies/shows folders, hoarding huge MKV files, etc… Sorry for the confusing wording.

Jellyfin uses the *arr suite, but Odin relies on a debrid service. The benefit is that nothing is hoarded on the device itself.