>>46188066thats hard to say, considering its a term MAINLY used by fans, but i would argue that the region and generation are the the key factors, while the other stuff you posted is optional (even if it was part of most third versions so far).
Yellow being a third version for example seems reasonable, seeing how it WAS the third game sold outside of japan, but in japan it was actually a "special" edition, while blue was the third version, and neither of them had everything you posted
