Well actually just a thougth: codex crafts should not supposed to be avaiable via black market since these are the product of arcane understandin involving the drill and then should be only manufacturable? This might make more sense,could it even made it without revolutionize the research tree?
Moreover, documentation research should lead to craft buying, like the weapons, would be nice, what do you think? the turtle might be a nice example,as of L2 is avaiable with all codexes. Maybe some more vessels hope will be added, of course following the philosophy "reay when it's ready"!!
Megapol at least at the beginning of the game should not use rusty niners, more that often in such early stages i've seen that, it sould use mostly police revolver and shotguns. Might be added in the future also specific police issued guns (megapol pistol, mrgapol carabine), as well other marsec entitled ones, or some more xg stuff in later stages. My 2's cents
Edit: AI should be less cheaty on cover, it always knows how where and how take cover, i'd suggest only more military oriented/trained units may calculate that (spartans, marsec?)