Yes, absolutely. The culture of criminality and invulnerability is not even helpful to their job. Running drugs to fund black sites where they torture people for shits and giggles is not actually in any way vital to the purported functions of the CIA. More oversight would do them good.

Unless you're asking if tearing it down and rebuilding it can be done without a period of reduced efficacy, in which case, no, that's a price that would have to be paid.