Sounds like the conversation needs to stay at the objectives and some core principles - such as we will use stuff that we have and that then with an objective plus a principle empower small groups with a leader to get it done.
General Groves built the Penatagon after only 3 weeks of planning m- all on paper
I also wonder how people who don't use social mnedia can be part of that conversation? Would it be easier if a small group whom knew their way around social media were given the space to act in that part of the deal?