Thanks Robert, this is especially helpful. I cover more territory than I'm able to properly explain, making it hard even for experts to follow (I see that now). I answer in detail below: A+B) better explaining some concepts in the moral theory; and C) agreeing that two of the inventions might be replaceable, but disagreeing about recombinant text.
A. The construction of M1 is poorly explained. I'm abstracting the concrete end/purpose of the material principle M0 ("morality purposes the endless continuity of rational being") to yield just "a universally collective end". To this, I add an abstracted personal agency to yield the formal principle M1 ("morality relates personal action to a universally collective end").
Then I use an analogy with structural engineering to illustrate my purpose. So "attach" is just the structural analogue of "relate". I picture something like a cantilever in a bridge design (a beam), attached to two piers (supports), which it spans. It will have to carry an actual load in its lifetime, but that load is unknown in any specific, concrete terms. Instead the designer has abstracted it (certain categories of rail traffic, motor cars, etc) and then designed a form to carry that abstraction (the cantilever so attached). As a theoretician, I'd previously deduced an actual, concrete load ("endless continuity of rational being"), but then, as an engineer, I had to abstract it away in designing a form to bear that load (i.e. to make it happen). The engineer builds only the formal means, never the material end. (None of this was explained clearly.)
B. I picture an "endless continuum of rational being" (a concrete thing) as a slowly expanding network of stellar civilizations, human and/or non-human, in slow intercommunication. Perhaps each of these civilizations eventually goes extinct (local discontinuity), but the network as a whole carries on uninterrupted. In this continuity, reason progressively develops and unfolds without end; where otherwise it would terminate in some final extinction, or be curtailed (like a broken record) in endless cycles of extinction and rebirth, popping up here and there in doomed, isolated civilizations. (This wasn't explained clearly, either.)
C. I agree the latter two inventions (transitive voting and vote pipes) aren't absolutely necessary. Other forms of voting might work. But I'd still defend the necessity of recombinant text. One's freedom of expression will be impeded (contra M2) unless one is allowed an independent draft that's free in content, form, means of publication, etc. It's really just the practice of literary freedom that I formalize and call "recombinant text". As such, I'd argue that it's a moral necessity. (But then, I guess it's not wholly a novel invention.)
I can answer further if you've questions, or I misunderstood. - Mike