Well, I doubt we find a common ground here. Mostly because I am a fan of KISS design and your idea would violate that on almost all levels. You want special rules for anchoring (solo instead of corp-owned, but still being able to dock there, have services running etc, but not needing a core that would drop for the attackers if they win…), special rules for engagement (making you not wardeccable, fighting back like a POS, a “special suspect mode”…), special rules for jobs (keep running while in RF) and so on. Sorry, but all that sounds like a wishlist and not a reasonable design idea.
Just in case you don’t know about it: CCP once announced there would be an S-version of the Citadels for small- and solo- operations, like a FOB (Forward Operation Base), cheap, easy to anchor and maintain but also weak and offering only basic services (storage, dock, repair, refit). They haven’t implemented it yet. And that was years ago. Also they announced that Vanguard Gameplay might somehow interact with PI in Ground Operations (no clear concept yet), I highly doubt they will implement any new space-interaction structures for PI until they have thought out how this should work. And to be honest, I can’t see them moving PI-industry away from planets as well, because explicitly the balancing between imports, exports, facilities vs extraction and storage is what makes the “PI minigame” in it’s core.
I am out now, sorry you couldn’t get me on board.