As I recall, the attempt to move toward cluster maps redefined some stellar cartography by necessity. This is why, for instance, Daichi and some of the SX-series appear in this "Saiki Cluster," even though we know they're part of the main sector.
So we have two maps considered full canon that, by design, used slightly different measures. I think the main map should be considered more canon because it's constantly updated and the cluster system was abandoned. Even in the "line up the dots" attempt a bunch of systems appear on the main cluster map, which obviously wasn't intended. The "line up the dots" version is really nice, though, other than the Saiki Nebula being somehow on the main map while the rest of the cluster gets condensed.
Mostly for your sake, could you attempt an overlay example that chops off the stuff currently on The Map while placing the rest of the systems "accurately" in terms of canon LY distance?