Not really. The SP NPCs were shoddily converted to be in MP, but unfortunately there's various AI artifacts.Also this is incorrect, the physics in SP aren't better by any means. If anything they're more responsive due to the lack of networking in SP. If you're referring to movement physics, this isn't exactly accurate either, since I've coded them into MP a while back (before the source code got released afaik) I think the really cool, undervalued things in SP would be the way homing rockets move. Unfortunately they don't exactly move as cool as in SP due to the networking issues.