What can be (realisticly) improved for a better and easier experience

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Interesting, looking into it, it can automatically send a request to Sonarr and Radarr to download certain content, if I don't have it on a streaming service? How does this compare to Jellyseerr?

If you already got Jellyseerr setup, Sonarr/Radarr Trakt integration offers no advantage. Trakt for Jellyfin is a good recommendation though.