We previously had the great ability to create a new site from an export which was super handy if your system exploded and you need to redo the work you previously did or you need to spin up a copy of your work on another computer or work with a new team member.
If this feature is currently available in 2.0, the new UX completely masks this helpful feature for users as it appears that the user can only add a new site from scratch either from a blueprint or not.