Galactic Co-ordinates would be a lot more convincing if their origin were at the Centre instead of at Sol, or at least if X were measured in the direction away from the Centre instead of towards it, and if their X-Y plane were the plane of the Galaxy or at least parallel to it.
If I were in the Delta Quadrant, I would convert them so that Sagittarius A was the origin, but in 2300, FTL 2448
, and Universe
, it makes sense to keep Earth at the origin.
Unfortunately we don't know the distance if the Galactic Centre or [how far Sol is off] the Galactic Plane well enough to use them as the basis of a co-ordinate system, and to me the current so-called "Galactic co-ordinates" only make our ignorance conspicuous.
One could make the same argument for any star. We don't really
know how close Alpha Centauri is.
I just have a hard time picturing what equatorial co-ordinates are supposed to represent. Coreward and Rimward are simple enough for a dolt like me to understand.
Still, while everyone else is happy I only complain about their chirality: if you do vector algebra using them all the cross-products come out reversed
Vectors are a needless complication.