‘What is he an Eagle Scout awaiting canonization?’
Childish characterization. Trump is a deal maker. He trades on his brand. Both his deal-making ventures and his brand would be ruined if he gained the reputation of a liar.
Trump the victor was willing to forego retaliation in the interests of MAGA. I.e.: he initially thought the best route to MAGA lay in taking a magnanimous approach to the vanquished.
Trump saw soon enough that Hillary wanted no part of the olive branch. He told Sessions to go after her, but Jeff recused. Jeff annointed Trump-hater Rosenstein to be acting AG, and contented himself with expanding civil asset seizures.
Trump is president of the United States. By virtue of the US Constitution, he is the leader of the executive branch, thus he can order the appointment of a special counsel; he can order an investigation be conducted by DOJ; he can fire Sessions, Rosenstein, or Mueller. He has chosen to do none of these things.
My theory is this is because a well thought out plan is unfolding and this plan will take some time.
We need to exercise patience, not conduct circular firing squads.