->Sessions may end up shocking
He’s already shocked us all right. By allowing the request for a Special Counsel into Trump from a few ragtag Democrats to go through, but refusing to appoint one into Democratic dirty deals despite getting a recommendation for it from his entire oversight committee several months ago. That may be ethical according to you, but it looks like unequal justice to me, if not outright partisanship against his own party.
With Mueller one of two things is going to happen
On one hand he may be working honorably and generally in the interests of justice and in alignment with Trump and Sessions although this is looking like a real long shot
If he is not proceeding as above, he will soon be forced to withdraw for ethics concerns and may even be facing investigation and eventual indictment