I also believe it is hard coded to (3) places. Another very limiting aspect is it seems to also be hard coded to use absolute and does not recognize the WCS locaton and orientation.
A while back Siemens was talking about discontinuing Geometric Properties and when I asked a dev about it, he wouldn't or couldn't say what the replacement was. Geometric Properties is an extremely valuable tool for many users so I sincerely hope they do not discontinue it but I hope a lot more that they improve it or even replace it with a better tool.
Another feature that should be added to it is dynamic slope analysis. The current slope function works great but is too cumbersome to use for quick checks, not to mention is separate from the Geometric Properties dialog. Some mid-tier cad/cam software, such as Mastercam, have had it for years.
NX 11.0.2
NX 12.0.2
EAP's and beta