You're right, I don't think it's difficult to set up. Especially if it can help to improve the scenes etc... I'm new to Renpy development so I still have to check the feasibility of the thing but whatever happens I hope I'll be able to improve the game with each update and every comment and feedback will be good to hear. I think that the environment where the game takes place, the quality of the renderings and animations will help to differentiate the game. Especially as I like to bring more depth even to small scenes (as far as possible and it's not really the case yet but at least more text and sound effects).TBH in some settings I'd prefer ambient sounds over background music. In scenes at work especially since they're rather short and player is focused on their content, so ambient sound would imo only help to feel them. I don't know about the places where we have to spend a long time at once though (but mixing two or more sound tracks shouldn't be too difficult? I don't know about ren'py but you can mix music with ambient sounds in audio software and join them to a single track that can be later added to the game). I think this immersive qualitiy could potentially be one of things that would differentiate your game from others (like Femdom City).
BTW Is TOF set in a female supremacy/gynarchy world? Or do males have equal rights and only MC is (un)lucky? And since it's a fantasy world are you planning to add other races and/or monster girls?
It's clearly not a female supremacy world. Men clearly have more power than women, especially those of the nobility. (We are in a medieval fantasy world after all) We can consider our hero to be indeed unlucky. Having to manage on his own after the death of his parents and owning this farm alone will stir up the lust of the people around him. This is also why he is called a reluctant hero. Because in this world, the manipulation of women and their sexual assets are somewhat their strength in order to change things and to be able to evolve in society and in terms of authority. I would say that unlike Femdom city, here women manipulate and control in a more subtle way and do not hesitate to abuse it if the man in question submits easily. I don't know if I am clear in my explanations. For sure you will find other races (You can see already an elf girl in the Futa scenes) regarding other races or monster girls, I won't be against it but I don't want to be against patreon policies so I should be careful with it and will start first with regular stuff (Elf, humans and fetishes) I will probably add some magic as well which could be really interesting regarding femdom stuff (Be manipulated with magic, physical or mental manipulation could be a fresh air of new/unusual content)
What do you think about that ?