feature request: multiple ResourceBundle files / ResourceBundle class(es)

It works great to specify a .properties file for internationalization to have labels etc. translated runtime if
the app. to be developed can be shipped with a language specific properties file.

What about if an application need to have multiple translations, i.e. the user that "logges in" has a language
preference, and all user interfaces should display text translated for that particular language?

It would be nice to be able to specify a ResourceBundle class instead.

/Kasper Behrmann