Repurpose the 24 hour sign up

Chucko_marek

Why can't we make the sign up period for heroic raids a practice time? we can either start from the beginning and see how far a solo team can get or pick a phase and test a team or get the mechanics down for a new team idea. Either way, the raid itself functions normally, except the damage doesn't count until the sign up period is over and the raid is officially open.