I think the likes of Kaka and Robinho is important because they have experience.
Its a win-lose situation in a way because then the media will question the manager why didn't he select young inexperience players to gain experience for the next world cup because Brazil are still rebuilding, although there's this hype that they are a very good side who should be favourites to win the world cup, that is never the case.
Seriously, do you think those you mentioned are the only good players there can be? Marcelo, David Luiz, Hulk are great, but they were just overwhelmed by the german better playing strategies.
Braziilian coach and team managements are living in imagine.
as if they wanted to lose on purpose.