I agree that the gameplay compared to any game out there is the best here but it remains a very dated gameplay compared to the current dynamics of non-porn games.
Furthermore, without wanting to criticize your tendencies or those of others, for me, a porn game without a minimum of story that generates suspense before a sex scene is useless, if I then add the penetration of statues, prehistoric reptiles etc ... to me is a disaster that doesn't trigger any kind of excitement (it's a rough project).
I understand the dev's commitment to realizing this project, however, in my opinion, he will have to go a long way before he learns to properly manage the unreal engine to create something truly innovative in this environment.