Today it is possible to hide a style from users with the "Allow user selection" in the ACP style section.
Is it possible to do the same for languages?
Reason: If you like to use an individual language pack you will be able to create a new pack as a child, change all needed phrases and hide the original pack from the users. If the next update appears you don't loose your changes phrases.
This is a very small suggestion, but it will be very helpful for customized language packs