[en] Some physical implications of a recently proposed classification scheme for the ¹²C + ¹²C Coulomb barrier resonances for which the requisite very large body of experimental data is already available are discussed. New data are presented suggesting that the back angle resonance-like structure previously observed in quasi-elastic ²⁸Si + ¹²C reactions reflects the existence of a fully developed, rotating di-nuclear system that governs back-angle yields in many additional exit channels. Also some very recent data are briefly discussed for ⁶⁰Ni + ⁶⁰Ni scattering in a first look at a previously unstudied region of the periodic table