All religions of sustainability, I hope, will be "open source " religions (their sources of inspiration being open, not just to interepretation, but also to scrutiny, discussion, critisism and alteration), in contrast to traditional "propriety" religions, whose sources of inspiration are given supernatural and unquestionable (except in respect to interpretation) authority.
It is not just the source of our religions that we need to be open about, but also about ourselves, particularly our sources of income, and how we spend and invest it. Why? Because they have the greatest bearing on us achieving sustainability on our finite and vulnerable planet. We need to be open and honest about the number of straws we place on the camel's back (see The straw(s) that broke the camel's back), so that we and others can judge our worthiness when we claim to care about the project in hand and about coming generations.