Hey there! Gotta say first that we'd love to have a huge scope for this game, but we're going to look at how well the game is received to avoid biting more than we could chew. For the same reason the exact nsfw stuff added will depend on patron polls. That said, I understand that people want (and rightfully so) to know the general scope/direction, including the nsfw aspect. I will try to answer that here in some detail, but we do plan on writing a post that would give a proper outline to all of our plans regarding all aspects of the game a bit later.
1) Monstrous is certainly a scope so one could argue whether an 8-inch-tall shark is more or less monstrous than our future ideas, but for the next characters and their respective realms we have some complete concepts of a slime girl as well as a druid girl taming a tentacle/vine monster for combat (and, naturally, fucking it as a pastime activity).
2) In addition to specific partner ideas we have a customization system in mind that would include not only attire but also stuff boob size modification potions that would change the appearance of characters in nsfw scenes. I think this idea could be explored further for more gameplay options with both existing and future characters. For example (while not promising futa content specifically) I feel like one would rather have a futa-pill to futanize their favourite character than be limited to one and only futa character in the game (if any). To be clear, it's not a futa-pill announcement but rather a general system outline.
3) To further expand the pool of technically partners, we're planning on micro sex scenes that are more like doom glory kills than full h-scenes. So, if we get a chance to implement that, most of the creatures you meet during roguelike playthrough will be at least briefly fuckable if that makes sense. Not that the current mob pool is rich, but that's the scope we could manage in a month that strawberry jam lasted for. We're planning for more mobs in each realm, too.