Chacham Ovadia Yosef said he’s in favor of Sephardim again practicing polygamy, as Rabbeinu Gershom’s restriction only applied to Ashkenazim. Teimanim even today have multiple wives (especially some of the older Teimani couples). And there have even been Ashkenazic rabbonim who said the ban (which technically expired per R”G’s takana but was kept in place by the rabbonim of the time post-expiration) could be lifted if the rabbonim today felt it beneficial to do so.
