So I admit I created an itch.io account just because I wanted to leave a comment about this game. I got some ideas that should be very simple to implement add challenge and greatly extends the life of the game.
I would like a merge funnel.
4 more goddesses. First could be an easy mode that has the what someone suggested an electric oven along with other beginner structures to make things simple. maybe a timer gate rather then a logic gate. I would save this only for the easy level as half the fun of your game is getting the charcoal oven to work the way you want and learning to use the tools you provided already.
Second goddess lactose intolerant or a requires everything to be cooked. enough said.
Third goddess like any normal one but there are some preset conveyors and feeders every now and then some unknown entity (cave, mob, or tunnel) drops some trash on the conveyor belt. Unfortunately for this it might be really gimmicky to stop this or be way to involved to implement.
Fouth idea animals (or maybe even the cowgirls) randomly eats stuff on conveyor belts. Its not supposed to be easy on the player. better get used to using logic gates :)
Last I wish it was not a fetish game so I wouldn't have to hide around the edge of the map to avoid embarrassing situations. Other then that great game it was fun learning how to use logic gates and creating timers.