Wouldn’t be the worst thing. If the big 6 left the league would be much more competitive.
They should:
1. Kick these teams out of their domestic leagues
2. prevent their players from participating in the Euros and World Cup - cue player revolt from many
3. prevent transfers from the teams outside the super league to the super league. Once their supply of good young players (Haaland, Mbappe, etc) runs out from across The World and the current crop of players in the Super League get older how good will it be then?