One could argue the only way for the world to fully appreciate how corrupt Mr. and Mrs. are (in some instances they were a combination) is for the corruption to be revealed via prosecution.
In the interim, IMO, no president, Obama and Trump included should pardon anyone who may be charged with, or convicted of, national security breaches. Such a crime is against every man, woman and child in our country. In that regard, Comey laid out the basis of a compelling opening statement.
“Even if Trump doesn’t prosecute, he should at last pardon her - let the world know how corrupt she is.”
What I really think will happen is that she will finally reveal her true heath problems, and the media will cover her with sympathy, and demand that she has suffered enough. They will cry, “At this point, what difference does it make”.