Haven't played the game yet but if the comment section is anything to go by here's a few idea's and suggestion.
Increase the NTR scenes but make them mostly optional.
Most of the comments have been complaining about NTR but i think it's perfect for this type of game since it can be used as a catalyst to explain how the mc goes from beta cuck hero to anti-hero or to supervillain.
Add a morale system
This will give the game a choicer based feel. Kinda like Being a DIK's morale system.
Hero/Nice guy = Beta/Cuck The nicer your character is the more beta he is, perhaps this can unlock a femdom/cuck path.
Villianous/Dominate = Maledom/Sharing if the mc is more dominate or manipulative this will unlock the maledom path/sharing path where the mc will get the option to use the girls and pimp them out or just horde them for himself.
Anti-hero/Middle = Romance/Harem if the mc is a little bit of both then this can unlock the alpha/romance which would kinda be the middle path where the mc isn't a complete villian but he also not a cuck or door mat.
You could probably also make it that certain girls would only be fully romancable on certain paths.
Example: If your a hero beta then maybe you'll be more attractive to villian's who want to beat and dominate you.
Meanwhile if your a villian more hero's will take an interest in you as they try to defeat you.
Body modification
Allow the mc to use science to modify his body in various strategic ways such as getting a bigger dick to seduce girls who like em’ big, increase in stamina to increase work production or increase endurance when sleeping with one or multiple girls.
Prince charming affect
Allow the mc to change his appearance to something more heroic, villainous or just overall more manly so the player base will stop complaining about how wimpy he looks ect.