FA Cup tinkering

"The Cup final is to be moved from its traditional position on the weekend after the last match of the Premier League season, to the weekend of the penultimate round of fixtures. The FA has agreed that the Cup final will be played on the Saturday, with no Premier League matches on that day or the preceding Friday, however a full round of top-flight matches will then take place on the Sunday."

Except it won't be a full round of top-flight matches if the two finalists are Premier League teams. And if any of the potentially four impacted teams are competing for the title they will presumably have to play that postponed fixture before the final round of league matches the following Sunday if not prior to the Cup final itself. Can't see what is gained by this change.