Look for Carlos Harris to replace (to a degree) what Chancellor was doing with the Jet Sweeps and big 3rd down catches.
Look for Jimmerson to get more touches, sure, but I wouldn't be surprised to Pegram basically step into Byrd's old role, and it looks like we may have a 3rd option for change-of-pace in Evans and/or Ivery. I expect the run game to look a lot like it did in 2012.
At WR, Can Goree contribute immediately? Can Terrell finally shine here? Is Kidsy ready to take the next step in his development? Any other surprises (Caldwell/Smiley/...)?
I expect Smith to step up big time this year at TE.
Biggest question mark is QB. Whoever it is, they are going to make or break the offense this year.