You can continue down that list...
Why does a pilot need 4 type ratings now to fly the same type on Single Pilot and Multi Pilot VFR resp. Single Pilot and Multi Pilot IFR?
Every pilot should come out of his basic pilot training as Single Pilot...
Give him ONE good Multi-Pilot course regarding workload sharing etc., and leave him with that...
Same to the IR:
Biggest difference is only between Single and Multi Engine IR (in the emergency part).
Once you hold one Single Engine and one Multi Engine IR, you should be allowed to fly any helicopter under IR....THAT would produce safety..
Sometimes, there is a bigger difference between two helicopters of the same type (e.g. analogue gauges vs. glass cockpit) than between two different types..
EASA has destroyed the helicopter industry-yet nobody realizes this, as the big offshore business kept pumping money into the game....now all of a sudden, that breaks away....and now everybody is in shock?
Surprise, surprise....