The only thing I trust Wray for is to not "pull a Comey" himself. Otherwise, he is going to coverup with all his might. He's protecting a corrupt institution. Pretty much has to, or else the place will revolt against him.
That's the way of DC. It is a corrupt place. Trump can do only so much, and finding 10 people who will "play a role" and suddenly the script changes is just not in the cards.