The problem for these 'big' clubs is they are used to winning in their own little leagues, if they all go into a big league how will they cope with losing and being also-rans by November? If 16 clubs form the league at least 12 of them will have nothing to play for a short way into the season, who will want to watch Man U v Inter if they are both in the bottom half of the league? A closed shop with no relegation would be a total bore for the average fan
I always remember a while back when Newcastle beat Barcelona 3-2 and Asprilla scored the hat-trick, it was rightly described as one of the great Champion's League games, full house, great atmosphere. Neither side qualified from that group and when they met in the return match on a rainy night in Barcelona the crowd was less than 20,000 in the Nou Camp, that's what will happen in such a Super League if it ever started, fickle fans would soon desert a league with no traditional or historic rivalry if their team was losing every week...