No crank no start

Just curious , but from the diagnostic stand-point , are you using a FORD system schematic for test info? I could be wrong , don't deal with ford much other than my wifes Explorer , but 'no-crank' is not an anti-theft issue as far as I know. Since you've replaced damned near everything , I suspect harness damage or loose pin connection between ignition switch and starter solenoid circuit. Basing my 'guess' on you being a 'c' level tech. Testing done with good multi-meter? Tested for signal at starter solenoid when someone turns the key to 'crank'?