I wouldn't judge a manager for being sacked at Chelsea, that happens to everyone!
Agree about Luiz, should be in midfield if he's in the side at all, especially with Alves and Marcelo bombing forward too, leaves the team open at the back. I like Dante, and Rafael would be your man to replace Dani Alves.
I reckon Ronaldinho will get his chance in the next two games.
I wrote a bit about the recent games here http://thebotafogostar.com/2013/03/30/s ... ng-brazil/