Personal thoughts on what to see in future stories:
More special and wonderful foods, such as berries that turn into balloons after eating, bread that automatically proliferates, honey that gets hungry the more you eat, and cream that makes you feel heavier.
More buffering/vore gameplay: food battle, stomach transport (having Lilly carry an elf team), hiding certain things through the vore, nutrient transfer (making people who don't want to hav bigger bellies), using big belly as a building, etc.