Everyone got a bailout and the majority of things that happened prior to the crisis should never have happened. 30 year mortgages should not have become the norm, securitization of everything should not have become the norm and ultra accommodative monetary policy should not have become the norm. The lessons of leverage/derivatives should have been learned post LTCM and not been repeated by the entire banking system 10 years later.
The 0% more just bugs me because to me 0% implies no interest and failure from an economic standpoint as a central bank. The point was more that the central bank charged "economic rent" on every transaction even if it was a minuscule amount. Debate the way everything was handled all day and looking back many things could have been changed, however 2.5 years later we didn't go over the precipice and the economy may or may not be an improving but hasn't contracted as it would under a bank collapse, albeit with significant monetary and fiscal medicine.
I don't think anyone can say what the job of a central bank is in crisis, it is a hard case to make. I would argue that our CB did a poor job of being "seen but not heard" during the Greenspan Era and over control at that point, however whose job is it to let everything collapse? Many of the emergency programs were definitely needed, now however regulation needs to occur so it never happens again. I don't think it would be the end of the world either if the Fed simply stopped attempting to play such a large role in the economy, post crisis, however if anything the crisis has cemented the Federal Reserve with a role in the economy for years to come (or a collapse before) due the gigantic balance sheet that will unwind over years.