3) it would be hard to moderate if languages people aren't familiar with started cropping up (people could be doing/saying anything and staff would be none the wiser)
The recruitment ad can be in English. All I want is that the actual RP thread is allowed to be in different language. Online translators aren't hard to use, so that's a non-issue. Note that I can't use a translator, because they aren't exact enough, they won't write the sentences for me. I assume you would rather have RPs with proper grammar, no?
This site is allowing porn and other controversial stuff, but you're afraid that someone might say something "bad" in a different language? Come on...