With King Airs and Conquests replacing Chieftains and 402s, soon these could be the entry level IFR twins for inexperienced pilots. So requiring B200 simulator will be a Good Thing.
However, if Conquests and other similar types that are not supported locally by a simulator are exempt, what risk analysis has CASA really done? A nine seat King Air is exempt (e.g. C90 or B100), but not a ten seater. They all handle pretty much the same, so has this rule been made because they have proved by flight test that the B200 exhibits more dangerous characteristics than the others (I doubt it) or is it the usual application of arbitrary numbers?