From this point of view, the contents don't matter at all so long as they are in fact classified. But for Hillary the contents matter very much, and she must be desperate to learn what those emails really are. If they show signs of criminal activity, such as bribery and influence peddling, they can be unclassified and still be damning.
650,000 emails? Isn’t that a lot? Could it perhaps be the entire email database of Hillary’s private server? Every single email from the entire scurvy gang? Inquiring minds want to know.