https://outerwildsmods.com/mods/

Quantum space buddies is good if you want to play coop. That’s how I played the DLC

Suitlog allows access to the computer from your suit

Scout stream makes the scout a video stream instead of a snapshot

As for story DLC, I’ve played “the vision” and “The stranger”. I liked the stranger much better, but it’s nice to have any new content.

Once you finish the standard game and DLC, check out the mods. There have been annual game jams that do add some stories.