Being that you can now bulk delete pages at once, there should be a check box at the top that you can check to select ALL the pages at one time and then deselect the ones you do not want to delete. It would be SO helpful instead of having to individually check each one if there are many!

Screenshot example: 

https://drive.google.com/file/d/1YLYEMGYrKLr1nlRDMNKsXrjXzd07qM1w/view?usp=sharing