Something you might find interesting and maybe move from feitorias a bit using it more as a Market denial building?
"The growing stability within the borders of European countries furthermore did not justify any defensive measures that architecture could provide, hence castles were gradually phased out in favour of more confortable and open manors or palaces.
The one place where the medieval castle lived on for a while longer into the gunpowder era and evolved to a new shape was the Portuguese empire. All of Portugals territories overseas were frontier-like, dangerous, unstable, and prone to outside attack, hence very militarized. This was the case in Brazil, Africa or Asia and in this last continent the locals were acquainted with firearms. Usually this would dissuade folks from seeking to actually live in those regions - Portuguese landowners and officials instead had heavily fortified, firearms-resistant manors built in order to do so and got on with it.
It essentially amounts to a manor outfitted with thick walls, bastions and artillery in order to double as a fort. It experienced sieges by Ahmadnagar and Maratha forces. The Bombay Castle was one of these buildings. Many smaller ones were built like medieval tower-manors commonly found across Portugal, rising amidst the tropical greenery for several stories. Many were constructed around Mumbai, Daman, Bassein, Goa, in Sri Lanka and Timor, where their ruins can still be seen. Cavalry and light infantry were vulnerable against fortification works, hence in the face of overwhelming odds, anything that could serve as a stronghold, such as granaries, churches etc was fortified, and the territory secured almost inch by inch. Even the short walls lining gardens and crop fields were taken into consideration, as they could provide cover to arquebusiers and bog down large armies. Such was life in a hostile frontier.
The residents of these buildings were called foreiros. A foreiro was half-way between a landowner and a petty governor, a veteran to whom the king had awarded lifelong rights to administer and tax a piece of land in exchange for keeping a body of armed men for its defense and the the native militia in order.
