Where there's ambiguity in the standard, it would be ideal to clearly define the methods that are intended to be used. Some examples here taken from the docs:
_Stat Experience is converted into EVs in a method that keeps the stats as close as possible.
Nature is set pseudo-randomly. It will be random, but consistent each time that Pokemon is converted
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I really appreciate the work being done to set a standardised way for fans to convert mons, I've had an idea to streamline this even further for romhacks with a tool I'm making but I'd like to maintain consistency with this.