I think there is a place for a European Super League, just not the closed shop that was proposed.
Hear me out. There will be 10 teams. The champions of the top 6 leagues (England, Italy, Spain, Germany, France and Holland) - plus the winners of each of the current 3 European competitions. The final place would go to the current Super League champion meaning that if it’s a winner of one of the above leagues, the runner up of that league would be invited.
A proper champions of champions competition. The integrity of all the competitions remain, and actually there is real incentive to get in to the various European competitions and attempting to win it.