If I have too many pages in dxp, you may find it difficult to adjust the position of the page(moving the page) by dragging and dropping.
I think it will be better for user to use if Spotfire has a page move/copy dialog like a sheet move/copy dialog in Excel.
I changed the title to more clearly describe what I think the suggestion is. Let me know if I misunderstood it.
In the Document Properties there are very nice overview tabs for Markings, Filtering Schemes, Properties and Scripts. Each can be easily managed in the appropriate tab. It would be great to just add a tab for "Pages", allowing the same overview with the possibility to edit the names, delete and to reorder.