We often want to export a subset of a space and it's becoming increasingly tedious to either deselect all the pages we don't want or select all the pages we do want.
If you were to add a Check Children option which checks all children pages of pages that are currently checked this would help dramatically.

We could then uncheck all the pages and then check the parents of the areas we wish to export followed by Check Children.

Alternatively a way to save common selections as a template would help.