Advice needed for controller box layout

[Bustercnc]

Relying just on Software E-stop is dangerous and shoudn't be used even on DIY router. Don't for one minute think this machine won't snap your arm like a carrot if get in the way, equaly neither will it think twice about ploughing it's cutter thru your hand just like it would a piece of Oak.!!

Jazzcnc comment stuck with me and I felt kinda insulted by it.
Afterwards I spent many hours reading forums and manufacturer specs in fear of duplicating many of the stupid/repeat questions already asked, it dawned on me, what kind of person is going to stick their hand infront of a drill bit when something goes wrong? instink dictates that you would pull the plug in the event of the estop failing.

No matter how many safety features are employed, the above will still happen unless a trip switch is fitted on a enclosure door, NOT mentioned in all that I have read so far