I don't know how realistic this is, but I've had the request so I'll pass it along. Occasionally people's pages get deleted and they want to bring them back. Usually it's not too big a deal to recreate the filters and column config, but it would save some time in certain situations to have an unretire interface like you have with entities.
I'm guessing that pages are not actually retired, they are just deleted, but if they are kept around in the database in some form, it would be nice to be able to bring them back to life.
Short of this, I'd love to get some better event tracking around the creation/editing/deletion of pages. Then at least we could see who deleted the pages that go missing. ;)