The Mediator in preparing his report, and the District Court in making the final adjudication, pursuant to section
640d–3 of this title, shall consider and be guided by the decision of the Healing case, under which the tribes have joint, undivided, and equal interests in and to all of the joint use area; by any partial agreement reached by the parties under section
640d–2
(b) of this title; by the last best offer for a complete settlement as a part of the negotiating process by each of the tribes; and by the following: