I prefer giving power no secrecy to hide behind and limiting it by democratic control. I dont know why the assumption is always that a central power has to be some opaque inscrutable beurocracy.
I don't know why the assumption is always that a democracy is incapable of tyranny. Gay marriage had been illegal for most of our modern democracies' histories under the tyranny of democracies. Prostitution and drug usage are currently illegal under the tyranny of democracies. In England the manner in which you discuss large scale immigration or transgender issues, or what pornography is acceptable to watch is subject to review under the tyranny of democracy.