My Harshaw Rule says you don't do things right the first time.
The Trump Administration provides abundant proof of the rule. Starting with the man at the top, the administration has been filled with people who lack previous background in their posts. And their various blunders and flouting of ethical standards are the result. The unprecedented turnover in Trump appointees is an indicator of the strength of the Harshaw rule.
All this means, however, that in the Mueller investigation there will be no conclusion of a "corrupt intent" for the simple reason Trump had no ability to form a coherent intent.