It seems to me that the more complex the issue or the more an issue requires rich communication, the more this issue should be locally controlled. Local control allows for multiple experimentation vs. monolithic slow moves.
We seem to chain the mass with the errors of the foolish, thus the foolish not only do damage but also restrict all by the new impositions placed on everyone.
Local is harder to corrupt by big money. Centralized power is easy to corrupt.
I think that many of today's issues and needs are best solved on local levels. Even local barter economies could insulate against monetary collapses.