I too play fem protags exclusively, but even though I myself'd never play him, I agree that adding a male protag would elevate the game.
they should add male characters in character creation as well because some people dont want play female characters
They would have to change how they go about making content for that tho, since their games so far, and the system they have up right now is geared toward losing and submitting and a female character. So to add a male, they would have to add way more women, and add quests that instead of losing, you have to win combat to save some girl. Get girls as rewards for doing some quests, and get girls from bribing, which means you need gold.
So the female player would be: loss, corruption, seduction, political favor for sex, rape, blackmail, and maybe more.
while the male player would be: economy, battle (winning), seduction, bribing, rape(?), blackmail(?) and maybe more.
So you could not even just gender-bend the character and it would work, they would have to add entirely new writing and some coding for it to work. For a player base (due to past games) that is mostly interested in playing as a woman from their past game, due to the name of the game (the game is more or less called '"female ninja" Sword of the Assassin') and that they are most used in dealing with female-centered games makes them unlikely to add a male player anytime soon or even ever. Like, it might show up when the game is finished in 1.0 as a 1.1 or 2.0 update. But that is the only reasonable time frame, since they would kill the game if they worked on two branches at the same time.