Reply To: Designing a booklet where pages get shorter

Interesting concept for the book, but the OP does not mention how the book would bind. If the book was wiro-bound or coil bound, this would be a simple task, and I would recommend using the page tool in indesign to set the pages at the correct sizes and positions. However, if this book was saddle stapled, this would be much harder (from a binding point of view).