I do not AT ALL think that is sufficient. To take an incremental approach is to create ambiguities, misunderstandings, pissing contests, backbiting and other forms of horseshit which are wholly unacceptable in any properly functioning organization. The proof in any case is in the pudding: the team, which Bill built, blows.
I took over a dysfunctional group once upon a time in which "sharing" and "consensus" were all. The group was an ugly, angry, dysfunctional, squabbling mess. I laid out in what areas consensus would be sought and in which areas I would make the decisions. Where decisions were made by consensus, once the group's decision was made, it was the job of everyone, regardless of where they had stood in the deliberations, to support the decision and make it work. I said I would get rid of anybody who would not so conduct themselves. In the end, I had to get rid of two people on that basis. In a few months' time, the group was running smoothly and as copacetically as is consistent with getting **** done. Organizations need clarity, - period - if they are to work.