Choose the language of the interface
The idea would be to be able to change the language of indesign as in Phostohop. After installing the desired languages via the Creative Cloud, it would be possible to choose the language in which you want to work. Most of the time people use 2 languages, English and their own language.
Why not install default international English and be able to choose another language for installation.
Birgit Ewert commented
For switzerland with three Language that would be a great plus.