The challenge, should you choose to accept it, is to alter Jewish history so that the Sephardi strand of Jewish culture/traditions is more prevalent and influential than the Ashkenazic. What kind of changes would be necessary to bring this about? What would a greater in size and influence Sephardic culture look like in terms of its more modern infrastructure and impact on Judaism and Jewish culture as a whole? In pre-1900 to avert any "No Holocaust" PODs as by then Jewish culture was already predominantly Ashkenazic in the first place.