One thing that I realized is that now basically anyone has a concrete shot at winning the Cup - and they know it.
In a normal tournament, it's fun to daydream but you know deep down that Brazil, Germany, Spain and the likes are there. Here ALL the mighty have fallen, save for France who is used to be there, and so every team can think "oh shit - we play well a couple of matches against other Why-Are-They-Even-Here teams and we win it".
By now I think that the history of the teams no longer matter - it matters only their current form, both physical and psychological, and their hunger. The king is dead, the throne is vacant and anyone wants to sit on it - and they realistically could.