At risk of poking again at the hornet's nest, who said that operating with full Cat A from a rig would measurably improve safety?
The data I have seen says that OEI enroute, with minimal exposure time at takeoff and landing is quite sufficient, since we are far more clever at making crashes than to simply wait for an engine to quit.
Yet again, I do wish we were willing to actually fix what causes crashes, rather than what we train for, which is burned into our collective brain, and therefore has our deepest concern, however unreasoned.