Let's not kid ourselves. Nothing will come of this, other than maybe they will talk about holding Ruve Darhk accountable for the damage. However, unlike with season 1's undertaking, there are no main characters who have any real stake in this: there's no Moira Queen, the good guy who reluctantly helped the bad guys' plans come to fruition, and there's no Laurel Lance, the lawyer who will try to hold the bad guys legally accountable. It doesn't affect any main character at all, really. At best (or worst?) it will just lead to Felicity and/or Calculator moping around about how they failed to stop it before they come to terms with and forget about it after a few episodes.