I think KH3 will be interesting in this final interpretation of Xehanort. I more prefer he return as the Xehanort we see as the apprentice of Ansem SoD, but more knowledgeable from his two counterparts. With that will come the idea of Xehanort regaining his memories by some means of possibly reuniting with Ven and Aqua, and then also some final tug of war battle between Terra and Master Xehanort, and relinquishing the whole Xehanort ordeal altogether