The private server setup itself was all the “intent” any “reasonable prosecutor” would have needed to indict
Yes. This, exactly.
I've been saying this for years. This server was never set up for "convenience," or whatever other reason Clinton gave as an explanation. One can only conclude that the presence of the server was to prevent certain communications from her from being archived or retrieved as government records. This alone, sans any other evidence, should've been enough to indict.
What concerns me is that under Obama's "Justice" department, any evidence remaining on that server has long since been destroyed, and that wouldn't be enough to convict her.