I understand, It makes sense for the weight stages to take a long time. I do like the idea of new internal animations for like unbirth/the womb (swelling), anal vore/the intestines (reversed animation + swelling), breast vore would be harder because you would have to add breast size increase = a lot of animations...
and if you ever planed on adding a new body swap to allow futa, it would allow cock vore to be added, which would mean a lot more animations. And now I am wondering how all these vore types would interact with each other animation wise and button wise they would all have to have their own button and probable their own fullness bar... yeah that is a lot of work...