New search engines mentioned above have made meta-romanization archaic. Romanized the CJK catalog cards was an excellent idea decades ago. We needed romanization on the cards for them to be filed. The computer does not need meta-romanization on the bibliographic record. I mean data generated by libraries according to characters found in the books being cataloged.
Romanized data found in the book are source data.
The computer can search characters directly. Libraries' effort and money would be better spent on a multiscript OPAC and multiscript workstations than manicuring the meta-romanization fields in the bibliographic records. Apologies for my old bits of ax-grinding.