Regarding to breast size and penis, he has already said he plans to implement it, but that depends on the vote of the patreons. If you can afford it and you want to contribute with ideas and see them perform, you can check your patreon.
I do not think that Majalis wants to put a female protagonist, although he said that he could change the pronouns and remove the events that
require having a penis also said that they is not interested in creating events related with the vagina or something in the fight system. I do not think this is what is being asked
I understand that they want to create a game based on a femboy / trap and they are not interested in changing the central idea of their game and I
think that if they do not want to put a woman MC it is better that they not do anything
but do not lose hope, you could still make the protagonist more feminine (but and breast size) and disappear the men of the game (currently some events have men as your partner: brothel events, INN event, lose against the ghost) , this last is just a suggestion but I think that majalis would be more interested in disappearing mens of the game than in putting a female protagonist