If Luis Enrique is able to identify the weaknesses of the squad, then I believe they will come back stronger next season. The players have this ability, also has an experienced coach like Luis Enrique.
Their only weakness is against English teams. This is what we all saw in the previous season.

Liverpool, Aston Villa and Arsenal all weren't easy to beat for them in the Champions League.
And of course we have the Chelsea example in the FIFA Club World Cup finale... It was a really embarrassing kind of loss, right?
Other than that they are still an incredible team. Surely one of top contenders for the Champions League title once again.