I get the skepticism, but I think quite a bit of the (admittedly generous) speculation surrounding Mueller will pan out.
Donald Trump himself be damned, imagine if you were going to attempt implicating this president's son in any sort of criminal charges for something like the Trump Tower meeting with Veselnitskaya. The prosecution's case would need to be built into an airtight configuration hinging on a small domino guaranteed to fell a well-built legal castle as soon as things were set in motion. That would take a looooong time. If he were to dare file charges against a Trump family member, Mueller would expect immediate termination, and should thus be expected to engineer contingency plans guaranteeing the eventual public release of his comprehensive report, additional pending and/or sealed indictments, etc., etc.
All that said, it could be that he'll uncover no definitive evidence of conspiracy/collusion with Russia on behalf of Trump Sr. himself, but I think that the obstruction of justice case is all but inevitable. And maybe I'm wrong. I mean, hell, I was just wrong a few hours ago about Trump making some official declaration of an emergency at the border.
I just want the government back open. If I were a foreign adversary, right now looks like a bitchin' time to strike.