I certainly agree that Xavi wants to bring Barcelona back to the peak of its glory in the Champions League by winning titles. But anyway, it must be difficult even though Barcelona's form so far has been better under Xavi. It doesn't matter how well Barcelona performed last season in La Liga, but the Champions League is very different.
Getting the Champions League title is not as easy as other domestic leagues, the Champions League is a collection of great teams all over Europe so it will not be easy for Barcelona to achieve that dream even though they have brought their team to a great performance.
The Champions League has a different sensation and the mentality of coaches and players is still influential if they do not have deep experience in the UCL, I believe Barcelona this time will be better to go to UCL even though the previous season could only stop at the group stage.
Every coach's dream is to win UCL. For this, the economic strength of the team is also very important. Not every team, only one team can achieve this. Last year, Manchester City looked like an excellent team and they won the UCL. It's been a great season for Pep and we can see similar things happen this year. They will have tough opponents and UCL will again be the most watched tournament.