It's interesting. I sense you responses are driven by the dull unimaginative repetitive sim engine failures. That's not the real world.
You're correct about ancillary systems. I know of one captain who 'nursed' a B767 home over a CAVOK Europe with 1 engine and reduced power. It was an ETOPS a/c within 2 hours of base and his defence was he hadn't shut down the other one; etc' etc. He was a very company man, got away wth it and no more was heard. I'm not wanting to open a whole new discussion about the right/wrong; just that the sim sessions are not so realistic.