Just an observation from the Ancient Ruins.
There is one particular area of obelisks that separates itself from the others, as it is not symmetrical like the rest. See the red circle in this image:
All the other areas, both rectangular and tirangular, are symmetric within the confines of their area. The area inside the orange circle isn't perfectly symmetrical, but it has all the obelisks one would expect from a triangular area of that size. The one in the red circle is however missing two of its corners. I can't see them anywhere on the site, so my assumption is that they were never there. It is also the only triangular section that is on the "west-side" of the ruins, with all the others being on the "east-side". I am not sure if this is important, but the placement and lack of "cornerstones" in that area bugs me for some reason. It's like an imperfection in an otherwise perfect area, and it seems deliberate.
I am also thinking in the lines of pathways between areas, and it definetely looks like the small circular area is connected to the central part via three formations and those buttresses(?). But that's where it stops. The last orange section does go straight towards one of the Beacons however. And the others don't have connections like this that I can make out atleast.