Idea #2 Could the number of obelisks be important, if we take the count of obelisks in each grouping, could one represent # of suns, # of planets, # of moons that sort of thing. I suspect the # of obelisks in each group are too many for this to work.
Nice idea. But can't see any correlation between numbers of bodies and number of obelisks (unless I'm miscounting, quite tired at the moment).