1- Impossible, even for the SOE devs. It IS using X, Y, Z already. Some retards at one or more 3D modeling program companies decided that a front-back view was more "natural" than top-down, and so now Y is up/down, and it's staying that way.
2- Instructions for switching back to the old con system are in the patch notes.
3-
http://www.eq2interface.com/download...fo.php?id=3382