The Pos: x, y and z values in the S2.0 Info Palette make it easy to see and modify those values for each object.
Is there a way to extract those values so that a guide could display them, like the Lat/Long Reader does for the Geo-coordinates?
Not that I am aware of. The main problem would be that as the x: and y: values get bigger, i.e. further away from the NW corner of the original (first) baseboard where x:=0.00 and y:=0.00, then the less accurate the Geo-positioning would be. This is because the Trainz World is a "flat earthers" dream while the real world is a spheroid.
Too bad. Actually, it is the z value I'm more interested in. While the undulations of the wire grid give some indication of the height variations, it would be nice to have a numeric read-out to make it a bit easier to judge the terrain.