Sorry to be so slow in replying, ff. I haven't been checking in on the forum much in the past couple of weeks.
My experience of the "council-of-equals" approach is that it's beyond green. As the "first among equals" the director was held directly responsible for the outcomes of his department by the next level up, but chose to vest the power to hire and fire individuals who are members of the department's governing council in that entire group. When he made this change, it had the immediate result of removing fear of the director's power and creating a "we're all in this together" dynamic among the council members. Communication became clearer, more honest and more direct.
"Using consensus decision-making" doesn't mean that all decisions were made by consensus of the governing council. Those with high impact on the organization most certainly were, though. There was hierarchy in the department, but it was a hierarchy of teams rather than of single individuals. Each team had a defined realm of decision making. With the exception of the director, each member of the council was the "first among equals" on another team.
My experience with some green approaches is that they tend toward including everyone in every decision (whether everyone wants to be included or not), making every decision by consensus, and being somewhat allergic to structure - which can result in talking forever and producing nothing. The director was good at providing structure that helped ensure that the needed product (policy, service, etc) materialized.
If you want to know more about the nitty-gritty of this organization,
go to this web page and scroll down to the bottom of the article for a link to a pdf document that contains the "Council Handbook". Happy exploring.