Barca has not had a true leader in the ilk of Puyol since he left. But the current batch of captains are underwhelming to say the least. Apart from being a leader who leads by example with top-tier performances - consistently and more so in high-stake games, a captain should also be professional, mentally composed (high EI), effective communicator when dealing with others ( the media, referees, opposition players etc). But most importantly who takes accountability, commands respect, demonstrate good sportsmanship and values that reflect that of the club's.
MAtS and Araújo are the worst candidates.
Raphinha (forum favorite) checks some boxes but fails in the EI department. The slightest trigger and the man loses his temper, lashing out at referees and fellow teammates. All the work-ethic in the world cannot compensate for lack of self-regulation of emotions on the pitch.
Inigo - Another one hailed as being captain material. He's inconsistent, displays objectionable behavior (spitting at opponents) in high-pressure situations, and will also be leaving in a year.
Pedri - Future captain. But for now given his age and expansive role in the team I'd rather he only focuses on his footballing duties.
So that leaves us only with one man - castigated and witch-hunted by the media and fans for months yet came out respectful, classy and professional - wore the armband and put in a captain's performances in the business end of the season. At his best, a top 5 MF in the world, he exhibits calmness, class and humility both on/off pitch, and you can see he commands respect of opp. managers and players.
Thats

for you. I know it's an unpopular opinion and will upset many on here. But I got to say it as I see it.
If he renews, he should be Barca's first captain.
(One moment that stood-out for me was during the Supercopa celebration when MAtS and Araújo were unabashedly hogging the spotlight despite being absent/ or doing minimal in the latter's case, FDJ declined to join them)