Dive deeper into smoking fetish. There are many games that tip-toe around it, but never fully engage. The SF community is quite large, larger than you might think. Currently, we truly only have one developer, Motkeyz who has fully captured, and provided games with an in depth SF concept. Timestamps, and Alt Worlds are amazing, and currently owning this genre/fetish. Both of these games also provide the option to exclude SF content. If SF content is not of interest to a player, the story is unaffected if they toggle it off. Motkeyz has truly done an amazing job with these games so far, and the SF community is clamoring for more! In no way am I asking or expecting for you to "reinvent the wheel", so to say. The current marketplace is so barren of in depth SF content, that anything that even brushes the surface draws our attention, and appreciation.
With that being said, your game is fantastic! It is truly a delight to play, so thank you! Regardless, if you add more SF content or not, you have provided everyone with an amazing game, and I look forward to what is in store for us in the future!