You're welcome, Edwin; thanks in return. I spoke in these forums already with Douglas, but I'm unsure whether he sees the similarity in our approaches. Anyway, here I answer about A) "collective"; B) votes based on "effort and expertise"; and C) the need for the overguideway despite the overguide being an individual.
A. I employ "universally collective" only in the technical sense of a property that applies to all elements, or to the whole set. So the possible ends of humanity are "universally collective" because they apply to the whole; as with the end of extinction, for example.
I agree we shouldn't think of the collective as a kind of subject "writ large" (Habermas). Robert de Neufville neatly dismisses that notion in his essay, "if humanity were a single person... [steering] would be relatively easy." (p. 5)
B. About "systems whereby an individual's vote is related to the effort and expertise that an individual has invested". That's an interesting problem. I'm curious how other designers would approach it. We've sketched something (Christian and I) that we call the "resource accounting framework" (RAC). To understand the basic idea, you need only recall how votes flow "like raindrops down the branches" of those trees I draw (e.g. p. 4), and how they aggregate in the lower branches and roots to reveal the picture of consensus and dissensus. Now just add resources that flow along with those votes, as though dissolved in solution. By resources I mean things like money, materials or labour (including expertise) that are contributed or pledged to the issue. For what little documentation we have on this, see Resource accounting framework and Account.
Here the crucial thing to know (not mentioned in the essay) is that the individual viewer of the guideway (forest) is free to filter and re-weight the currently flowing votes (and resources) as he/she pleases in order to yield a personalized view of the on-going results. Such freedom is possible only because the guideway is a purely informative system, not a decision system. The guideway itself outputs no official results. Decisions (if any) are always separately ratified in an external decision system, which is usually simpler in design. Still, there's no reason why it couldn't borrow some of the RAC infrastructure and bring resources directly into the decision.
C. I too think the myth-making overguide will most often be an exceptional individual, rarely a team of two or more, and certainly never a collective "hive mind". But I suspect the scale of this individual's contribution will often be unrecognized at the time. And crucially each person must remain free to step into the role of the overguide, which must always be open and informal. (In this sense, the system engineer blindly sees each person as the overguide.)
But the formal overguideway is still needed for the sake of maximizing everyone's freedom. The mythic destination must be chosen according to "the unforced force of the better argument" (Habermas), which means a consensus formed in rational discourse. Only then can we effectively steer humanity via all those normative guideways and decision systems (fig. F9) and do it without force. By following the overguidance freely and with eyes wide open, one cannot be steered, but must oneself be steering. (In this sense, each person actually is the overguide.)
Mike