If you can get by in the expedition without using the expansion slots for multitools, your exosuit, and your starship that you are awarded during the different phases of the expedition, you can take them back with you to your main save when the expedition is over, and use them on your main save.

Keep in mind that you can buy one exosuit expansion at the space station and one in the Anomaly in each system you visit during the expedition as well.

Also, despite the end-of-expedition bug that I managed to get around with the photo-mode fix, I really liked how I could take things back to my main save. It was also very satisfying to get a ton of units and nanites to carry over to your main save, not only for the other stuff in your inventories, but also your in-expedition accomplishments, even those not directly related to the expedition itself.

I sometimes feel that the HG devs don’t respect the players’ time with some of their design decisions, but this was the first time I felt like my time was well worth playing the expedition because it advanced my main save as well, and not just with cosmetics and cool building parts.

After doing the most recent expedition i returned to my most favourite past time: looking through every little smitch of lore to find out more about the upcomming storybeats.

I went around looking for some words from the autophages and doing their bigging when i came across one of those severed heads you can fix up. zjey said something about…forgotten moons of Korvax Prime? i was confusedm, not remmebering moons ever being mentionend.
I kept going, read more texts, learned words, translated more. I learned the word “moon” eventually, bringing me back to the text i read before and eventually i found it: one head spoke of the “scrapyard moons” and it hit me like a truck. The autophages rebuild themselves from the scraps and trash of the Korvax. Maybe they lived on it, being a somewhat seperate faction…shunned by her kin.
It explained why they all looked like…well build from trash. It almost made me tear up, especially thinking of how sad Nada seemed when thinking of them or the voidmother.

They were left by their maker, shunned by their kin and probably can’t even leave the planets they are on now (as it seems they have zero space pressence)

I hope I’m not interpreting all of this wrong but for now this is my understanding of it.
Its simply a tragedy.