I'm just throwing out a few ideas that you could use in the future
1: How about adding a masturbation option? It could be useful for making certain plants grow other than being an excuse to have your character whack it or smack it.
2: Adding a purchasable outhouse for making fertilizer, applying fertilizer to the crops you grow could yield a bigger payout or replenishing soil patches.
3: Customizing your hut with purchasable furniture to access special sex scenes.
4: Ability to buy a found-footage style video camera for replaying sex scenes.
5: A story mode.
6: Upgrades for your character.