Documentation richness
Result: rich, qualitative. Docusaurus maintains task-oriented guides and API references for the site configuration, docs plugin, sidebars, i18n, and theme configuration.
The versioned documentation and release posts make upgrade research practical. Community resources are clearly labeled separately from official packages, which matters here because local search is a community dependency.
Documentation breadth does not remove integration testing: v3.10 is the final v3 minor line, so teams should also read the official v4 preparation notes.