The trophy would have the top 20
Here is the idea in full
great british cup
The Coronation Cup was a one-off football tournament to celebrate the coronation of Queen Elizabeth II in 1953 between four English and four Scottish clubs held in Glasgow in May 1953. This tournament, like the Empire Exhibition Trophy, was held in very high regard by football clubs, as at the time it allowed teams to test themselves against teams from another country in the days before European football.
Celtic and Hibernian met in the final at Hampden Park, Celtic coming out the winners 2–0 before 117,000 spectators. Celtic's victory meant that they became the unofficial champions of Britain.