This is a placeholder for additional work needed after T204969: Production use of LanguageConverter for read views of Phase 2C languages, including (perhaps):
- Performance work (unless already needed for T204969)
- Fixing/deprecating LanguageConverter::guessVariant() (needed for srwiki)
- Improving the syntax of the language converter specifications
- Improving the inline rule syntax to handle word boundaries
- PHP port and/or RFC process for same