Agree about Iniesta. In his prime, opponents would look like children chasing their dads. Sadly, it isn't like that anymore, 1400 ish minutes in la liga if I correctly recall. He himself somewhat realize. But I would argue it's not Barca problem anymore next season (in CL), as we got Coutinho and Dembele. More time should be given to Dembele. Arthur should be rather at the back (don't know if this is his best position or not?) To replace raki. Raki is still good as a sub. He would work harder due to this competition. At DM in a team usually a ball winner and/or a flow destroyer. Not only distributing the ball to the next player. The later characteristic is not known in Barca (example for great players in this position, Gattuso and Edgar Davids). Roma has shown their quality in this position with physical encounter and tackles. I found Barca hard to cope with this kinda players. Umtiti got screwed more often lately, I don't know if it has to do with the rumors, plus we saw Fergie on the bench that night. I seriously hope it's not true, as he has proofed to be superior in his position, when it is his day.
Anyway, what I like about Barca is that their play is not conservative, like ok, physical plays in the DM, quick wings in AM. Barca DNA has always about possession, bringing the ball forward as a team, slow patient play then quick pass whenever there is a gap/ chance. It's not static, and will change rapidly during counter attacks of course, but never a full direct play.
Sadly, nowadays people just want to see quick lapping play, quick direct attack.. It's not what makes me fall in love with this club.
One of the best ever display I have ever see in Barcelona play is during the 2nd half against Manchester United, first one that is, almost ten years ago if I could recall. Hopefully they can play like that once more.