There is no good way to deal with name changes. You can change them in the metadata, but the old ones will still be around in the paper itself. You can let authors change them in the paper, but the old ones will still be around in others' bibliographies. You can't do much about the bibliographies, since (1) you'd need an automated way to find them all and disambiguate them (have fun with Chinese names) and (2) a lot of authors will reject the idea that someone else changes their papers.