All I'm hearing is "remove fleet carriers"
We can identify why people want one under the existing game as of 2025, it's a Bag of Holding. And to also cover alexzk's mention of SWTOR and other MMORPGs and why people wanted 1 man guilds there, the issue is the same between all games, it's limited or nonexistant storage solutions.
SWTOR went on to monetize theirs, as did other MMOs from a similar era up to modern ones. FDev could have, or could do, similar, and let players Pay Arx for Commodity storage room and Credits to transfer from one storage to another, or even call upon in-lore carriers to ferry your commodities to your storage. Whether it would be a planetary/station/asteroid cargo area is functionally irrelevant, as long as it permits others to interact with it in a similar fashion to current Fleet Carrier cargo mechanics.
This is all design which have been done before in the past decades and doesn't require new thinking, just budget and willingness to execute.