I think someone mentioned it already, but I'll detail it again. What would seal the deal for me on this is if the trackball had some sort of flange for the top of the panel. For instance, you could rough cut a hole for it and not worry about being an absolute perfect circle as it requires now. Then you mount the trackball, and from the top screw down a flange type connection like what is on a push button housing. This covers any errors in the cutout, and would give the TB an ultra smooth and pretty tie in to the CP.
As to name, I prefer Ultimarc E-Z Mount Trackball. Simple, and to the point.