Our 3D modeller Shun spends about a week per page carefully designing and animating the models. You are correct, they are per page and completely pre-defined. The fun part is colouring in the pages and seeing the results :D
Even me, 28 year old male, can have a lot of fun with this app.
Personally I'd like to do that but we have a lot of limitations with the Unity platform and supporting multiple platforms. Every feature needs to be implemented at least 2 times (iOS, Android) and tested.
Perhaps in the future once we get some money coming into the company. Right now we don't have any more funds left for development.
I'm sure this has already been discussed, and I know this falls under "easier said than done", but you guys should really try to get this on toy aisle shelves. Perhaps in the form of a book? Maybe have a prominent "Try me!" feature on the cover instructing the user to install the free app and point it at the cover to get people pulled in.
Even me, 28 year old male, can have a lot of fun with this app.