We long for the day when Rabbithole or others have perfected the on-chain CV, but until that time, different levels of participation or contribution zones might act as proxies for reputation. 

There is some form of reputation scoring. Reddit for example has Reddit gold, and badges, etc. which travels with a person’s avatar. In the DAO version of this, those rewards can travel with a person who goes to any other DAO built on top of the same protocol (aka. Interoperability, a word you all know!)