I'm willing to plenty are pleased, though. People don't tend to worry about overloading a position when it's their own club, even in such an extreme case as adding Thiago to arguably the best midfield in the world, and one into which he doesn't really fit. Rumours of us signing Falcao or Lewandowski might be met with doubts about fitting all our strikers in, but if we were to actually sign one of them, I don't think you'd hear many people complaining.
EDIT: That said, maybe in conjunction with Pep as their new boss, there might be worries that they are about to be Barcelona-ized.