Jim / Shy
Just playing devils advocate I seem to remember ( along time ago) flying IFR in a mil 341 with nothing more than a standby ah and alternator and a mini tans that was useless. The only autopilot was me !!
Interestingly wonder if there are any comparable figures on mil crashes in single ifr that would not have happened if there had been 2 engines and autopilot etc etc. If there were such figures it would prove/disprove the point as you could compare apples to apples .