The Rockridge Institute posted a piece on creating a values system shared across the progressive movement:

What is needed is a focus on creating a progressive values movement that recognizes the shared values that define who progressives are, and that encompasses the work done by groups working on many different issue areas and programs. Recognizing the importance of higher-level values, principles, and policy directions can help progressives overcome common differences about policy details and tactics so that more enduring progressive goals can be achieved.

Sounds like a good idea to me.