Ability to only allow specific language requests

[AnThRaXSOI]

We were chatting in discord, I am wanting to only allow requests for a specific language, not allow a user to request, maybe not even have the ability to see, something in the lists that doesn't meet the specific language requirements.

"not quite only allowing certain languages, but more of a blackhole for requests you want to block entirely"
is what your response was if that sparks any ideas.