Not sure about those line combos. I highly doubt Granlund goes to center now that Cullen is signed, and Cullen is far from an "Other option". He will be the center of the 4th line, and he will move up in case of injuries. The guy who is an "other option" in his stead is Landon Ferraro. Honestly, we haven't even heard that guys name since he was signed. The 2nd line (really the 1st, but it's a 1a, 1b situation) will be centered by Koivu. He's still probably the best center on the team.
From what we've heard so far, it also sounds like Olofsson is going to be on the 3rd pairing with Kyle Quincey to start the pre-season, with Ryan Murphy and Mike Reilly as the next two in consideration.
Sorry for nitpicking there.
I did enjoy the read, and I know it's tough to keep everything straight when writing about every team in the league, rather than just one team.