The Commission shall consider the questions raised in the appeal, as well as any additional matters pertinent to the appeal, whether or not included in the motion for appeal. Decisions by the Commission must be based on testimony and other evidence in the hearing record. The Commission may adopt or decline to adopt, with or without changes, all or part of the commissioner's decision or the ALJ's PFD and the underlying findings of fact and conclusions of law. The Commission may remand the proceeding for further consideration by the commissioner with or without reopening the hearing. The Commission may take any additional actions it considers to be just and reasonable, as permitted by law.