It could be nice to have a recycle bin for pages.
I had many times a customer who delete some pages and he'd like to restore them.
When there is only on page and when the user did not delete the "orphan" contents it is not a big deal, but when there are subpages, many contents on a page... It becomes complicated.
It becomes harder when you have many sites on the same cms or when the user deleted the pages many days ago because it is impossible to use the backup.