It would be great to be able to “nest” pages and have the ability to expand or collapse a nested set of pages in the lefthand sidebar. This could greatly reduce complexity and make it easier to quickly peruse a file with many different pages inside.
An example might look like:
Expanded:
˄ Store Maps
↳ On List Page
↳ On Detail Page
↳ On Saved Lists
↳ Ideation
Collapsed:
˅ Store Maps