Unfortunately for Luck, not every part of the offense significantly improved in the offseason. The part that is still questionable includes the part that has caused Luck to be hit 225 times over his first two seasons, the most in the NFL during that span, according to ESPN's Chris Mortensen.
The interior offensive line was terrible last season, and it desperately needed addressing, but the Colts did too little to assuage fears for 2014.
At center, the only move was to bring in former Dallas backup Phil Costa, who promptly retired a few weeks later. At guard, the team brought in a veteran who hasn't played since 2012 (Lance Louis) and played as a backup for most of his career. The team did draft Ohio State offensive tackle Jack Mewhort in the second round, but he'll be changing positions and is, after all, just a rookie.
Returning for 2014 are Hugh Thornton and Khaled Holmes, each presumably to starting roles. Thornton struggled as a rookie, while Holmes couldn't beat out Samson Satele, who may have been the most disliked Colt since Hank Baskett. The lone bright spot on the interior is the return of Donald Thomas at left guard, and his play returning completely after injury is no guarantee.
Sure, the Colts have done things to improve their offense, but the offensive line still has just as many questions as last year.