I have looked at doing this as well. About the only thing that has really stopped me other than a lack of time is the limited Z travel of the Nomad, which means one would have to make a very very compact probe if you wished to probe material of any height. Ultimately Carbide Motion will not cut it for this type of probe interaction (Eg auto leveling, automatically finding hole centres, stock centres etc.). I was planning on looking into bcnc or others that allow customization.