Not sure about Presidential Directives, but probably there were Presidential Pardons. You can’t pardon someone for a future crime, only for past crimes. So your idea applies.
Such a document could cover lots of people's nefarious activities, and if they did not continue such activities into PDJT's term, they probably never would be prosecuted.
So no, they're not quite like pardons and can pertain to future actions, as generally would necessarily be described in such a Presidential Directive.
The onus of responsibility would lie with the president, and of course, going after a president legally or via impeachment is not easy. Note: Barry could still be impeached. He could also be convicted of treason.
3d3n, still suggesting the FISA Report release on 9 December means Chief Justice Roberts is Implicated, just in time to remove him before he can dare preside over the coming Senate Impeachment Trial.
He would be removed and possibly Chief Justice honor can go to Justice Clarence Thomas?
RBG next.
Taking the HOUSE of Representatives back.... nextest. :D