Well it probably make things complicated, but hear me out. Fury road sequel could be about mad max ( played by Gibson) raising a child which child is tom hardys character and after Gibsons death Tom Hardys character would follwo his fathers footsteps. Also it could explain the flash backs that Tom Hardys mad max has on fury road. But this plot in my opinion would made me think less of Tom Hardys character as mad max. Maybe this plt would be cool onn a comic or TV series.