Bula
I think you misunderstand the thrust.
This is not a Captain F/O two crew, line operation/crm, issue we are talking about.
The syllabus and standards required are mandated. This is not a democratic set up.
The regulator sets the requirements and delegates an individual to administer said requirements, be they check or training.
Go do study/exam at a university. Do you get to determine how the syllabus is administered? Do you get to dictate how the exams will be run?
With regard to the Twin Comannche at ISA +25. (Not in the last 35 years)
Isn't the PA30 limited for IFR ops. (1% requirement).
What is the useful load extracted from the P Charts/POH in those conditions. 3/5th of 5/8ths of FA I would suggest. Chimbu said it all. Do the procedure and if it is going downhill pick your soft spot, but do not ASSUME that it will not operate.
Maui