Now I'm really confused.
CC-BY-SA (which does require citation) is one of the options on the table here and was already so when you started this sub-thread. As it happens, is also the one I personally prefer, on the basis that it promotes the creation of additional Free Culture work. Sorry then we really agree only Mathieu O'Neill said JoPP was going to go to CC0 which triggered my reaction (as I said yesterday: "
JOPP being CC0 would make one less canal of communication open for me. " )... CC-BY-SA is indeed a lot more appropriate. Also regarding non-rivalry goods an old memory comes back to my mind: in 2004 the director of a French television canal, supported by a known publicitarian, triggered a scandal by saying "Je vends du temps de cerveau disponible à Coca-Cola" (I sell available mind space to Coca-Cola). The expression stayed... it somehow presents mind space as a rivalry good which confirms what you are saying about the non-scarcity of non-rivalry goods and re-places the issue on the social functionning itself: availability of people and energies to process and defend ideas. **n.