Currently, while writing a storygame in the basic editor (I haven't used advanced), you can see all of your pages by clicking on page list. It defaults to listing them by order of creation, so if you finish one story line, that one will stay on top compared to the arcs you finish later. I would find it incredibly useful to be able to sort by shortest number of pages to get to the page as well as alphabetically.
The number of pages sorting option would also address an earlier suggestion where the person wanted a map showing how all the pages link together. For instance
Favorite Color?
Red Blue
Best shape? Favorite food?
Circle Square Pizza Cake
If I wrote the story for Red > Circle first, then Circle would appear on my page list before Blue, unless there was a sorting option. Then the first page where I ask your favorite color would come first, then Red and Blue since there is only one page before them, and finally Circle, Square, Pizza, and Cake since there are 2 pages before them. I hope I explained that okay.
It would make proof-reading, as well as finding any dead ends, a lot easier.