I highly recommend playing on lower difficulties with brutal AI as the encounters in piratez are not balanced around brutal AI, and play BAI on its lowest settings unless you really want to be forced into extremely cautious play.
I customized aggression and intelligence for XComFiles ruleset, so BAI can pick up these numbers instead of making every unit act same.
For instance of animals, it's aggression 3 which makes them tend to approach, or rush. If Leeroy flag is set, they will chase no matter what, if no leeroy flag - they will still take some cover, but prefer to bite the asses if tiny possibility appears.
Intelligence is how perfectly they move. If intelligence = 0 they move in more spontaneous manner, if = 5, they move perfectly and carefully, take best cover possible.
Same can be done to Piratez ruleset. All left is to pick up the BAI options for both "inherit aggression" and "inherit intelligence", disable some weird shit like "BAI avoids proximity grenades because they are seen on minimap" and voila.