Yup, the suit and cologne are both needed at various points (although technically you can avoid using the cologne, it's just...very tedious.) As for variety, I agree, but this is the work of one person, with limited abilities. More weapons or enemies means more art assets, which means a considerable amount of additional time. Adding new mechanics isn't AS hard or time-intensive, but it does still take time, not just to develop but to bugtest and balance. I've surmised, so far correctly, that most people would rather that time be put into more scenes and horny content; for a game like this, being hot is always the priority. Even the gameplay is there primarily to enhance the horny, because imho having some actual interactivity and agency is more fun that just clicking forward in a visual novel. I also don't want to make things TOO complex, because I want to keep the game fairly accessible. That said, again I agree, it could absolutely use some more variation, and maybe I'll be able to work more in as I go. But even my attempt to get just TWO completely distinct enemies into this one didn't turn out, with the second (the "clients" or customers, the dobermans) ending up as just NPCs for now.
This is also a function of what I'm doing fight-wise. If this was just an ordinary RPG fight system, and if you lose, sexy scene, that would be very simple to implement, and to add bad guys to. But instead, I have elaborate systems built into the fights themselves to do the sexy stuff IN the fight, not just after. This means that every significantly new enemy has to be fit into that system (or have a new one made for them, which is even worse.) In other words, there IS a fair bit of complexity to the fights, it's just been build around a few enemies, simple basic mechanics, and more complex sex mechanics. It's like character creation in an RPG: I have limited points, and I put them in scenes and battle sex mechanics, which makes things a little weak elsewhere. Hopefully still fun though.