Back in the day the airline I worked for went through a phase of giving you some multiple in realistic failure on the sim. Tbh whilst crisis management could be assessed. I actually learnt nothing as the failures were so extreme the QRH was of little help. IMHO the sim should be used to teach not demonstrate how smart an aleck the check airman is.
maybe if the dead crews had had more teaching time to confidence these accidents would not have happened. As for or MCAS being kept a secret. As said by some worse than shame on you. (Boeing)