He should have been more flexible, at least during matches, i agree. He could have changed the formation, depending on the opponent.
But now we see Lippi doing the same.
Italy-Brazil 4-3-3 (Pepe-Gilardino-Di Natale)
Italy-Montenegro 4-3-3 (Pepe-Gilardino-Di Natele)
Italy-Bulgaria 4-3-3 (Pepe-Gilardino-Di Natale)
Italy-Georgia 4-3-3 (Camoranesi-Toni-Di Natale)
Italy-Cyprus 4-3-3 (Di Natale-Toni-Gilardino)
Lippi also insists on playing 4-3-3 since he took over up until today.