So the site oughtn't to be just for linguists. But it should still be for someone who wants to read expert advice on language. A lot of the questions I've seen are basic, whether or not they are, strictly speaking, simple reference questions. Expert advice is not what's needed. Some questions are more a matter of assimilating the language, or having a good tutor. If you can turn such a question into interesting advice that hasn't already been given, great.