I'll never tell the world what I am or was, that's for certWe should prepare for the wors I'd agree that if it does come out, that it be on our terms. Better from us than finding it out themselves, though I wouldn't be opposed to us hiding a while longer. The world at large may accept us. Or they could turn on us, either use us or exterminate us.
Also, unless it's been done already, we should have contingency plans in place before anything is revealed. Just in case it goes sour and it very likely might. Regrouping, countermeasures, protections, having a powerhouse individual in each group of people among us, as well as safe and hidden places (wards, magic or otherwise, anti-threat charms, etc) that they can't get to us at.