The concurrent reorganization of a domestic mutual insurer with one or more mutual insurers, domestic or foreign, into a single mutual insurance holding company, whether domestic or foreign, may be accomplished by a joint application and a joint plan of reorganization and may be approved by the director by complying with the requirements of this article. The director may determine that such other procedures are unnecessary to avoid duplicative costs and efforts in satisfying the requirements of this article and effectuating the reorganization.