I am thinking of mainly 3-4 players:
James Van Riemsdyk- he just seems like he can step up his game, and with 2 seasons under his belt, expect something big from him. Wouldn't be surprised with a 60-80 point season from him
Marian Gaborik- Not sure if you cna call it a comeback, but with Brad richards now by his side dishing out to him, expect some big things from him too. Potentially a 45-55 goal scorer this year with Richards, if ONLE HE CAN STAY HEALTHY
Jamie Benn- This guy looks like the real deal on his play. He can do almost anything, physical side, scoring side, good passing. A kind of plyer like Patrick Marleau or Joe Pavelski, but a little bit lower.
Evander Kane- Almost the same a JVR. he can score, and show potnetial to be a top center.