Suggestions include:
Changing progression; perhaps starting with no defensive weapons, then buying a shovel, then gun if you still want a gun in the game, as it will give the player a sense of progression instead of just "dildo" or "extra mini-game" and involve the core gameplay loop. Though enemies might want to move just a bit slower to compensate. Admittedly, I read how the intentions were to make it more action-based and may change with the addition of items. Still, just a suggestion. Might be enough to know there's more to unlock in the future.
Enemy hitboxes can "linger" for a bit so that when they move, if the gun projectile hits their lingering hitbox, it looks more accurate as to how it looks visually. Admittedly I've only ever played RPGM games, so I don't quite know how easy it is to address this issue. Related to the "bug" section.
Maybe additional crewmates? For example, a crew at the bridge that "navigates you back" instead of being "teleported" outside of the facility. Can give more context for sex scenes outside monsters, can fit more niches/kinks; male crew, female crew, other, etc. Can add minor quests or "destressors" as extra examples.
A personal request would be for the scenes to be more animated (even if it's like, 3 images that switch between rapidly).