NOTE: I'm not saying that we don't need this meta site during the beta phase - I think it will be vital.
However, once the site goes public a lot of the questions that will be asked will have already been asked in relation to the other sites. So rather than duplicate a lot of the information here wouldn't it be better to gave it all in one place?
The only (!) drawback I can see is that the current culture on (the one true) Meta might put people off.