4. As far as doing some sort of story patch-in for Bionic, it might be possible, yes. I'm not sure how exactly that would go, though. I do see this as being set on Earth Prime and part of the machine uprising. However, I also have thought of that as being far earlier in the timeline than the human civil war and earlier than the AI attacking them. A few hundred years, anyway. The stuff going on in Bionic Dues is more "the rumblings before the real storm," and you can see some of the potential causes of what leads to civil war later, as well as how the AIs get loose. But those AIs are not centralized or very good yet, and rebellion against the city-owning corporations has not yet begun.
I'm more "lore patch to link BD to the Arcenverse" than "BD expansion with financial investment and risk".
I would have though of a reference to the Exodian Blade and Dr. Langstrom. But as it would rather be hundreds of years earlier than the true civil war and AI (Exodian Blade sibling-like) breaking free... Maybe we would see the name of Langstrom as the great-grand-father of the Dr. of the same name who was involved in the [spoil] of the [spoiling] Exodian [spoil].
Let admit that the "exodian sibling" was discovered (and worked on by humans) earlier than the civil war. Let say about a hundred year before. And the Langstrom lineage was already involved. And the "AI" as we know it in AIW was in very very early stage of R&D. And maybe the robots of BD were controlled by an early prototype of this AI (prototype but not directly the "exodian sibling"). Then latter the AI get better and more complex; the civil war crawl up; the "exodian sibling" take over the AI that was partly created by emself (and partly by one or some Langstrom) and destroy Earth. Boom: bridge between BD and AIW!
Well, it's a rather rough bridge I wouldn't walk on myself. But I bet with some refinement it could be an official part of the "official Arcenverse".
I can't resist
trying to patch a lore-hole of a universe I love.