@cstross@clacksee@JetlagJen@AuthorHelp the obvious solution here would be to have all of the editors at all publishers spend 2-4 (paid) hours per week on AO3, reading fanfics and learning (and keeping up to date with) all common CWs and tags that readers may expect. :D
(yes, I can see myself a number of reasons why this would be impractical to the point of non-feasibility, and I'm sure I'm missing at least a few more)