(concurring in the result only). The majority, in my view, reaches very difficult issues which need not now be decided. See Smith, Edwards & Clark, Labor Relations in the Public Sector 902-908 (1974); Note, Public Sector Grievance Procedures, Due Process, and the Duty of Fair Representation, 89 Harv. L. Rev. 752, 757, n.28 (1976). It seems to me that the discussion and the resolution of the complex issues lurking in this case should await a more appropriate factual posture.