Would it be worthwhile to create a document of organizational best practices that could be shared amongst EA organizations so each one does not have to re-invent the wheel? For example, the book The Checklist Manifesto established that in certain fields, like medicine, checklists can be very valuable and there are certain ways of making them most effective. Obviously every EA organization is different, but I imagine there are certain functional similarities that could benefit from shared learning.
The cost of this seems pretty low, but in a way the expected value too seems limited (to me at least from the context you provided): I'd assume that unless this turns out to be so good that it becomes a "standard" of sorts (that people always tend to mention whenever organizational ineffectiveness comes up), it would likely end up as a relatively short lived project that doesn't reach too many people and organizations. Although this could partially be mitigated if it's stored in a persistent, easy to search and find way, so that future people on the lookout for such a guide would stumble upon it and immediately see its value.