Yes, I have been working on this line of thinking for the past week. The main questions I have are as follows.
1) If the answer to the puzzle is a set of spherical coordinates, then to what do we align the unit vectors, and why?
In a previous post I explored the possibility that the unit vectors are aligned relative to certain stellar objects as seen from the south pole of Merope 5C. The two lower-left marker lines align with the large and small Magellanic clouds. The double-arc symbol puts the twin-ringed Merope 5 in the upper-right quadrant. The long arc on the left could align with the nebula in the upper-left quadrant. That would put the top of the diagram pointing south away from the galactic center.
But the question then becomes, what exact spherical coordinates are represented by the diagram? And do they point somewhere on the surface of 5C, or somewhere in the UA shell, or what?
2) If the answer is not a set of spherical coordinates, why'd they put a diagram with coordinate lines and X, Y, and Z axes in the center of the puzzle? LOL.