Many Brazilian fans are in uproar over Brazil's ranking. And it's about the get worse. Brazil have no competitive games before the 2013 FIFA Confederations Cup.
Looking at the average points Brazil gained from friendlies in the last 4 years and using it for the last time frame, it looks like Brazil will have around 968 points in the June 2013 FIFA Ranking - the one released just before the start of the Confederations Cup. That's not good enough for the top 10, but it won't drop them out of the top 20.
All hosts drop in the FIFA rankings when the other teams play qualifiers. Just look at Germany, Switzerland, Austria, Poland and Ukraine. South Africa had some competitive matches as the 2010 WCQs were combined with the 2010 Africa Cup of Nations qualifiers.
Mr. Menezes will obviously come under pressure. There's already quite a campaign going on: "Fora Mano Menezes". How will CBF handle this?