The fundamental flaw with QE and similar attempts, aka Bernanke's earlier "credit easing", is that you are not going to stimulate the economy by giving big banks more money. Banks do not drive the economy any more than government does.
Even after slashing interest rates, giving "loans" to banks by "investing" in them using taxpayer money and finally resorting to monthly QE life support infusions, the US economy is still as bad now as it has been since the obama admin came into power.
To date, QE represents close to $4 trillion in printed-from-thin-air money that is inflating the stock market, driving up cost-of-living for most Americans and is priming the US economy for a major crash. It's not going to end well.