This part reminded me of a macro I made.
Now my macro was just for setting Z zero to the spoil board but what I did is use a user defined value for the maximum stick out of their longest bit. I think if you know the stick out of the probe and where the fixture is supposed to be then you can do like I did and rapid move most of the way and then probe, slow probe. With a probe the users stick out wouldn’t change much assuming it’s always mounted the same. Obviously you or the user need to add some safety margin. With my macro for bits the short bits take a little longer than my long bits but it’s much faster than before I added the rapid move in all cases.
I’ve always been interested in a touch probe mainly for doing carves on an existing item. I’d need gSender to have the ability to do a grid of probes and make a height map or mesh that you could then bring into some CAD/CAM program.
What your currently working on seems like it might be a step in that direction.