Here are the locks in a healthy lineup. Compher isn't quite a lock but I don't see him being a scratch until he plays himself out of the lineup.
Landy - MacK - Mikko
Bura - Kadri - Donskoi
XX - Compher - XX
Calvert - Belly - XX
These are the guys in competition for the three openings, in order of likelihood IMO. I think Nieto is almost a lock because of the PK. He also has proven chemistry with that 4th line in the past.
Nieto
Namestnikov
Jost
Nichuskin
Wilson
Kamenev
Namestnikov, Nichuskin, and Jost I think will battle it out for the remaining two spots. Namestnikov may have an edge with his playoff experience with Tampa, and so they can evaluate him a little more before deciding whether to bring him back or not.
Jost may have a bit of an edge over Nuke despite Nuke having a very good season. I think they may want Jost as an option at center. Then they can flip Jost and JTC depending on who's playing better down the middle. Would be tough to scratch Nuke, but they have plenty of offense, and he's behind Landy, Kadri, Belly, Donskoi, and Namestnikov defensively IMO. He'll likely get swapped in for someone after a loss.
I'd be surprised if they went with Wilson after he missed basically the whole season. I know everyone else has been out a while too, but he missed the whole season basically. It's gonna be tough for him to get his conditioning and timing back. He's not Peter Forsberg.
My guess is Nieto, Namestnikov and Jost make the final cuts.