More to the point, this is the DEMOCRATS we're talking about. They know how to play the game and are not afraid to lie, cheat, steal and change the rules of the game to accomplish their goals. They are running the show, and they will do all they can to sabotage and stifle the Repubs at every turn.
Are we naive enough to believe they haven't already huddled-up with Mueller to assure him that they'll take care of him and prevent the pubbies from extracting an ounce of damaging truth?
My (unfortunate) prediction: Nothing good will come from this. It will simply be used to throw 'impeachment' red meat to the kooks in the House and their insane base. Look for an attempt by Mueller and the Dems to inflict maximum damage on President Trump, and covering up everything the Deep State criminal gang has done for the past 4 years.