1. Inserting the new offense
The Packers have had a consistently changing offensive coordinator since Mike McCarthy became head coach. Only current coordinator Joe Philbin has lasted more than three seasons, which he did in his first stint.
After a few seasons below the team’s standard of offensive excellence, McCarthy brought back Philbin to reinvigorate the offense. One issue with this is the majority of the players that played with Philbin the first time are gone. On offense, only Rodgers and Cobb were there during his first stint.
Offenses experience growing pains when implementing new systems, but the Packers are on too much of a clock to win to struggle. In an NFC where roughly 10 or more teams could compete for just six playoff spots, the team needs to hit the ground running. The team is currently slated to have the most difficult schedule in the NFL, despite finishing third in the division. With a schedule that difficult, good teams will take advantage of small blunders like a missed blocking call or route miscommunication.
The offense also has a lot of new or young faces at skill positions who lack chemistry with Rodgers. In addition to getting to know each other, they have to learn the offense as well.