Thanks all for supportive answers.

Extremely interesting about the North America 2 stopover new rules with the Asia transfer rule, seems I can get both with my airline.

Europe-HKG-MLE-HKG-CTS-HKG-PER-xHKG-USA...

The round the world desk of the ticketing airline seems to be able to change the xHKG to be a stopover, giving me Europe-Asia-Europe-Asia(Only HKG)-USA...

My question is, would that be any problem after this rtw is re-issued? That is, after my stopover in HKG no one will catch me in Hong Kong airport or USA and afterwards... right? Or if I need to further re-issue my ticket nobody would say "geez... how come you got HKG stopover, your ticket is invalid". Right?