That's exactly the point though - you want to make the UI deep. Ideally when I hit "Format" I should get a confirmation dialog warning that I'll irreversibly er

That's exactly the point though - you want to make the UI deep. Ideally when I hit "Format" I should get a confirmation dialog warning that I'll irreversibly erase things, with an "expand" button for more information. But, as a power user the correct button to hit should be self-evident without actually reading the dialog at all. This way the user can go as deep or shallow as they want without losing context.