I think no matter what your flavor of open is there will be, at some point, someone in the mix wishing to impose their perspective on you. I am in a hierarchy style open relationship. My husband sees a woman who is also in a hierarchy style open relationship. At one point she accused me of not respecting a decision "we all" made because her, her husband and his secondary sit down and schedule things in advance. Only she will not put herself in the shoes she wants her husband's secondary to wear; she has never sat down to schedule a single thing with me involved. She expects me to get whatever info I need from my husband exclusively. She said she will not be marginalized but stays on the margins when it comes to me.
So maybe this occurrence isn't limited to couple centric ideals, just a way for people to stay in their comfort zones rather than put in work where is doesn't result in instant personal gratification?