The first places to start would be in Eastern Europe, where the old Soviet and Yugoslav leagues were dissolved, and new national leagues started from scratch. Generally, the revamps that were most successful were those nations that had traditionally strong clubs already, so the transition was seamless in Russia, Ukraine and Croatia, whereas teams from Bosnia, Macedonia, Armenia etc never qualified for European competitions under either format. The most notable failure, however, was Serbia, as Red Star and Partizan were regular European participants, winning a European and Fairs Cup respectively, but they've rarely qualified for group stages since the demise of Yugoslavia. Of course, both England and Scotland have changed league structures over the years, but the biggest reform there was arguably between the Football League and the Conference - scrapping re-election has rejuvenated lower division attendances, the higher levels of non-League have been streamlined in the last decade, and as AFC Wimbledon have proven, a club can literally start from scratch and climb all the levels of the football pyramid.
Bookmarks