Sanders is simply taking power from several financial elites, and giving it to a single centralized authority. Sanders fails to realize that the biggest institution that is too big to fail, is the U.S. government. We should spend more time dismantling all the government powers, and not adding to them.
The increasing centralization of things like emergency powers that state governors once controlled (details would take research to cite) is worrisome and you make a fair point.
You lost me when you said "all" powers though. The Constitution is a 2nd draft for a reason: We need some centralized power to keep a unified front in order to benefit from the economy of scale it provides.
"reforms focusing on increasing transparency should be accompanied by measures for
strengthening citizens’ capacity to act upon the available information if we are to see positive effects on corruption. "