Interesting. I hadn't considered the Moon for symbolic representation of decentralization. It's fairly obvious that the Sun represents centralization, but when thinking of opposites, Saturn is implied, partly because Valens refers to "dismantling" as a keyword for Saturn and that will be the effect upon centralized structures.
However I think you're right that the Moon fits better what decentralization actually is. Symbolically this would be the King (Sun) handing power back to the people (Moon) with Saturn acting as kryptonite on centralized structures. It's often not possible to generate a 1:1 correspondence between keywords and symbols (or for that matter between words in different languages) because their semantic fields overlap.
It's somewhat relieving that Saturn isn't it in itself because it would imply something rather unfortunate in the long run. It's also interesting to see similarities between this chart and the one for the start of bitcoin and the symbolism of the Moon as "the counterfeit light" and what authority says about bitcoin as "fake money".
I couldn't see the time lords off to the right so I wasn't sure if that was because you're using a dual screen setup or because you had the splitter docked all the way to the right. It might be that the focus of one of the controls was not on the proper target when you tried to generate transits. A way around that might be to bring up the transit toolbar directly from the Hellenistic | Time lords menu.
I prefer to view these symbols from a de-animated perspective as measurement tools because the agency of such is not clear, especially when you're not dealing with the chart of a person. There is a whole set of hierarchical causes that typically have a more direct connection, any one of which can make your prediction inaccurate, particularly with the problem of semantic field overlap.