So what simulator exercises would you incorporate to reflect the differences in the MAX, specifically the MCAS? How about an uncommanded nose down trimming? That is already incorporated in a conventional stab trim runaway, a basic requirement of getting a type rating on any B737.
Scenario 1: In the simulator, doing a “runaway trim exercise”. There you are at 6,000’ straight and level, 220kts, nothing happening. Oh look, the trim has started moving on its own, can’t stop it, I wonder if this is right? No? OK, do the runaway checklist. Sim passed! Easy, this trim runaway.
Scenario 2: In the aeroplane, cleaning up. Trim starts moving forward, then stops. Is that MCAS gone wrong (or even possibly functioning correctly), is it STS doing its job or is it the other guy who’s flying it trimming the aircraft? Hmmm. There goes the trim again...
Scenario 3: All the above plus continuous stick shaker, aural warnings and UAS symptoms.
Honestly, I’m not quite sure how you would train an MCAS runaway in the sim, if disconnecting the trim when there wasn’t an actual runaway = fail. It’s easy to say “they should have done the trim runaway checklist” but how do you tell NORMAL operation of MCAS/STS from ABNORMAL in a very limited timeframe? If you disconnect the trim every time it moves, you’re going to be doing lots of very short flights...