I think the GW should stay hidden until they have made all three gifted, then if they choose to they should reveil themselves. If they reveil, the EW would then challenge him/her right away? I am still a little confused over this...(I should reread the rules) Doesn't the GW learn the EW's identity when they come forward? Do they have to challenge each other right away? I guess the GW would want to so there would be no more werewolf making, but wouldn't they(GW) want to stick around for awhile even though they are known? Because they still have the ability to change werewolves back and regift anyone that gets degifted.
So all in all....sorry if this stuff above was useless to say...
I think the GW should remain hidden as long as possible.