Hear! Hear!.. I'm w/ ya.. 5 axis kinematic's is currently what is holding up my purchase of a decent 5 axis CAM. I haven't found one that does it for you [ so mach doesn't have to] and mach doesn't do it so right now.. mach is really just a 3/4 axis mill, the 4-5-6 axis is only usable either for a 4th rotating axis or to slave motor's, in reality it can't be used as a 5 axis control until this is provided, even if the hardware connected to it has the ability to run 6 motors..
Jerry