Why we need ranks then? Maybe better to operate without ranks - above Full Member i.e. 
- because the remained Ranks speaking about Trust: Senior, Hero, Legendary 
- because the remained Ranks speaking about Trust: Senior, Hero, Legendary Maybe we should give the ranks with trust (Full, Senior, Hero, Legendary) only for members which persons are well identified through documents or i.e through eyewitnesses - which eyewitnesses are identified well already.