I saw the game between Chelsea and Hull in the weekend, and did not have a clue as to what Scolari was trying to do. They failed to turn their first half dominance into goals, and in the second half Hull took control of the game. Quaresma's substitution also made no sense.
It might not have been flashy, but I honestly believe Jose Mourinho was the best manager for Chelsea. Avram Grant did nothing new, but basically continued on Mourinho's lines, but failed to give the team the crucial "lift" for the big games. He had to go.
What the Chelsea management need to realise is that they while they have some excellent and world class players, they do not have anyone with flair (apart from maybe Quaresma if he can find his Porto form). So they if they want to play like Brazil, then they will need the right kind of players, time and patience. If they want results immediately then they will have to settle for the Mourinho style of effective football, not necessarily good to watch.
Personally, I think Chelsea need to analyse their budget, and see what is appropriate. Injuries to two key players, Drogba and Essien have hurt the team, but there are other players who can do the job, but haven't really been doing.
My pick for Chelsea manager would be Cesare Prandelli, but I doubt that will ever happen.