Are you just slightly worried about putting your expertise on the line? Who knows, as someone has already suggested, you might even learn something in the process.
I think you are a million miles from the mark.
I dont believe it has anything to do with putting your expertise on the line. If it did as an FAA IR holder you would take an EASA IR renewal (goodness knows what it will be called) and if you pass, job done. That is sufficient to prove you have maintained the ICAO standard.
In the alternative why dont we devise a system where the typical 10,000 hour ATPL should sit ten exams if he is told by his employer to fly to some tinpot republic, and another ten exams for the republic of Windover, and while we are at it a theory test and a driving test for every country you want to drive a car in.
It is not about proving you can fly to a standard but about jumping through hoops that prove nothing and line the authorities pockets. Many people find the cost of flying privately costly enough without having to fund the regulatory industry; most of the people who post on here fly for pleasure, they dont get paid to fly and it is not their business - which seems so often forgotten.