Doddy, I've done various sketches for control panels, but I really wanted to test the layout, as that's the only way you can get a proper feel for how it'll work.

Like the MPG/selector switch thing. The selector switches above makes sense from a visibility view, as it means their labels would be more visible, however as I mentioned, trying them with the mock-up, it felt like I had to make an effort to lift my hand up, over and clear of the MPG to move them to avoid using the MPG itself as a steady for my hand.

This will be getting coupled with just a touchscreen. I will have USB ports on the housing should I want to connect a keyboard/mouse, however I've got no plan to have them permanently connected, as I'm aiming for most things to be done via the touchscreen, with only physical buttons for critical functions.
I am currently considering not even having the axis/step size select switches, as I've seen a way of adding that functionality to a touchscreen in a way that I think will work well (the new screen designer for KMotionCNC has opened up a lot of options!). If it works, it will save me a good bit of fiddly wiring, as the connectors on the selector switches have to be soldered, with a terminal for each position you want to use.