Pedro - nearly had an excellent assist to Messi, if not for Dante's last-ditch save. Defensive hero, stopped many Bayern attacks, the one player ahead of the defense who actually provided some shielding when out of possession.
Valdes
Pique
Playing Messi at his current fitness was a huge tactical error against such a physical and fit Bayern.
Alves is by far Barça's most wasteful player in the offensive side of the pitch. Would have been better strategy to line up and work Alba/Iniesta/Pedro on the left.
I haven't yet re-watched the 2nd half, but Barça was still incredible in the first half in the face of Bayern's pressure. No other team could have stood up toe-to-toe as well as they did and try to work the ball into the opponent's half. Bayern just simply didn't allow any space and never let up, and with a broken Messi walking around the midfield, there was rarely anywhere for Barça to go. This was an exceptional defensive display from Bayern more than anything else- really nothing particularly brilliant or entertaining about their offense this game.