Kings and Queens
Retain a relatively powerless (auxiliary) leadership that can throw out rotten governments when demand by we, the people. No need for killing innocents, burning babies or cleaning up the mental and economical wreckage caused by a silly war against yourself – like others did. Lead by example with a steady bloodless revolution.
80 years ago the crown and church guided our entire lives. Not now, a relatively short time and the monarchy is already irrelevant.