The history of abuse by the FBI has demonstrated time and time again that it should not continue to exist. Its leadership needs to be indicted and prosecuted (whenever justice returns to the United States).
What could go wrong?
Libertarians have been harping on this all along.
No government organization/bureaucracy should be allowed to do their own hiring.
To allow them to do is is to allow them to build their own ideologically homogeneous power base. If the hiring is diverse (meaning ideologically, educationally, experientially, and demographically - not skin color or ethnicity), it will eventually weed out the scum.