....
- Potentially stealing player ships (source).
TLDR, their objective seems to be to add game tech and mechanics, not just a cosmetic additions etc.
(Whether they achieve any of that is another matter, but it's the type of thing they've floated, and essentially pre-sold with the Lifetime Pass).
Taken in concert, these aspects suggest ship interiors won't be inserted as some form of purely cosmetic add-on. Or arrive as a bonus update to EDO. It's just too much work, not how the DLC system seems to be structured now, and it's all been pre-sold as a stand-alone expansion.