I don't know where to put this, but it would be great to have 3 decimal points (or for that to be configurable) on the interface view. The 2 decimal place loses some significant precision that's needed when working with finer things like guitar parts. It also makes calibration of the axis and distance traveled much more complicated. My machine for instance seems to have 198.000 steps/mm, or something close to that but difficult to tell given the accuracy readout.
