I think there is something in what you said Shabez, about geocentric and geodesic you mentioned in your first post..
I m not an expert but I think I ve got some ideas..
First the Geodesic.
I dont really like abstract thinking so i thought visualising is maybe the best way to answer this kind of questions..
In the picture above we se the geodesic system we are currently using to find our coordinates around the earth (the flattened by 0.3% oblate ellipsoid).. If we simply look att the 60 deg angle, we know that from that point and ''straight'' down to the equator fitts 60x60 Nautical miles so that only leaves us with 30x60 NM from that point up to the pole.. which in this picture (kind of exaggerated) seems to be a much longer distance.. I think this clearly answers your question Shabez!!
The other picture is a mix of Geocentric and Geodesic.
The geocentric angle is ψ and the geodesic angle is φ. Its kind of interesting i think to see that the geocentric system has an opposite effect. The angle ψ seems to be something like 45deg (appr) and if you look carefully you can se that the distance from that point to the equator is longer than to the pole. (I could clearly see that when I drew an ellipse with increased ecentricity)..
So my conclusion..
Geodesic system: Longer NM close to the poles
Geocentric system: Longer NM close to the equator
Please reflect to these and post your thoughts , because as i said im not an expert in these matters!!
regards
Jetpipe.