THE SENSITIVITY AND SPATIAL RESOLVING POWER OF NUSTAR HAVE ALLOWED THE STUDY OF INDIVIDUAL NEUTRON STARS AND BLACK HOLES IN OTHER GALAXIES AT HARD ENERGIES FOR THE FIRST TIME BUT THEY ARE NEARLY ALL MORE LUMINOUS THAN THE POPULATION OF SOURCES PROBED IN DETAIL IN THE MILKY WAY. WITH A NUSTAR LEGACY SURVEY OF M31 WE HAVE FINALLY DETECTED SOURCES AT THESE LOWER LUMINOSITIES ALLOWING A DIRECT COMPARISON OF M31'S NEUTRON STAR AND BLACK HOLE ACCRETORS TO THE MILKY WAY'S IN THE CRUCIAL WINDOW ABOVE 10 KEV. WE PROPOSE 4 ADDITIONAL POINTINGS OF M31 TO DOUBLE THE NUMBER OF>10"37 ERG/S DETECTED AT HARD ENERGIES TO ENSURE THE SHAPE OF THE LUMINOSITY FUNCTION IS MORE ROBUST TO LOW NUMBER FLUCTUATIONS. ALSO WE WILL CLASSIFY THE BRIGHTEST SOURCES WHICH IS ONLY POSSIBLE WITH HARD BAND DATA.