LibO 3.5 Windows installer chooses the languages to be installed from the OS set up locale during a typical installation. This is a problem for users with a Windows language pack version, which rarely have a proper language configuration (e.g. Catalan), or those without a localized Windows version (e.g. Asturian) As an improvement, I would suggest to include several languages in the installing process when a Windows dominant language (e.g. Spanish vs. Catalan or Asturian) is normally prevailing in a Windows environment. That way, most of the potentially affected users can more easily switch to other languages without having to find out how to do this from a custom installation. This means that, once a Spanish (or es-ES) OS system is detected, other languages would be installed (ast, ca, ca-XV, eu, gl, oc) as well. I imagine this could be applied to other cases.
Note: Here I don't mean the language of the installer UI, but the languages that will be available to be used from the LibO UI once the application is installed (via options).
Thanks for new idea Some languages have very much variants. For example Spanish used in almost all America, Russian in all ExUSSR and English in half of world.
Including more languages in the installer won't happen afaik. I talked to some devs about this and LO will stick to the current structure. So setting to WONTFIX. If any dev disagrees please chime in and re-open this bug and feel free to set it to NEW in that case.