Regarding stable velocity. If we had negative interest we would have it. Then all that monetary expansion nonsense could be over and we could get on with our lives without cursing some evil businessmen for being morally reprehensible so we have a scapegoat.
I don't know what the natural interest rate such as to get a stable velocity, and it would not be static but would change with changes in the economy, but I don't think it would be negative unless we were already deep within a recession.
And do be so quick, there's always another issue to simplify! Can we get base 12? Can we get a carbon tax? A land value tax? Voting reform? I can go on all day here...
