Question: are you planning on having the two remaining characters have different builds? I have no complaints about the gameplay itself but I think there's no real reason to play different characters when there's no real difference between them apart from their heads.
I understand this is just a side project but I think having different body types would make the game more replayable. Have different breast sizes, have some characters be more on the petite side, others larger and more muscular, different skin tones, stuff like that.