A few disjointed thoughts and observations.
I think the best we can hope for with Paul at the head of the monetary committee is largely educational which is not the same as saying he will be ineffective. Paul has already said he wants a public debate on monetary policy. He has said he would like to have testimony in which Austrian economists would sit next to esteemed Keynesians and debate policy. His purpose seems to let the American people know there are alternative economic systems to what we currently experience.
We might also be treated to publicity // testimony on the FED's private corporation status. I'm sure there will be investigations of our gold reserves. Bottom line, if Paul gets his way, a lot of sunlight will spill on to the FED and supporting companies and organizations. His effect will be felt long term. What will not happen will be near term control over the FED. There will be no honest-to-goodness audit. There may be a sham audit, but nothing meaningful.
Pick up and read a copy of The Creature from Jekyll Island by G. Edward Griffin to get a clue as to where Paul is headed.