I wouldn't like that option to be honest. It takes a lot of effort to arrange the matches and I think it would just drag out. It doesn't represent a solution either because the same thing could happen again. Another problem - France. Why should the top 3 teams from Group B go through and only the top 2 from Group A? When does it end? I don't think changing the match format half way through would be right. Whatever happens, there needs to be some kind of tie breaker.