Personally, if I was running a school (yeah, keep dreaming!) I'd train my students on whatever aircraft I have.
Andrew M, I see your point about the lack of training in carb heat and mixture - but every aircraft has its own little curiousities, and no one would get into any aircraft without appropriate training for that aircraft. If someone learns on a diesel aircraft with FADEC, and then wants to transition to a Continental or Lycoming powered aircraft, they would need to convert.
Just the same as I've had to convert to understand the peculiarities of the Rotax, and the electronically-controlled variable pitch propellor, in my current aircraft. And the same as the way I have to remember that the first stage of flaps can be lowered at a higher speed than the white arc on the C172 I hire occassionally. And the Great Lakes (the only one out of a fleet of three, incidentally) that one particular school has which won't turn left on the ground at normal taxy speeds without using differential braking.
Each aircraft is different, so just take the time to understand your new aircraft before climing in, and there's no problem.
FFF
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