Even more group games is even more of a burden on the host nations.
Just proper representation is all that is needed. UEFA has 14 teams this WC, almost half of all teams, when they only have 25% of all teams in FIFA. CONMEBOL has 5 teams in the WC, more than 10%, when they only have 5% of all team in FIFA. Sure it's not a clean split but for the WC to be the WC it needs to represent the diversity of the footballing nations and not just a showcase of the elite.