This season isn't over yet, how can you conclude it?
Anyway, even Xavi makes Barcelona better, Xavi didn't get any trophy/title with Barcelona. Even they have a chance to win the title of Europa League, Xavi missed it.
That's what makes me a little surprised with Barcelona and also with some people who like to draw conclusions at the beginning of the season, even those conclusions are made when a team has just finished its first game of the season. It is too early to conclude and also too strange to talk about because there are still many games left in the season for each club.