Forwards:
Landy-MacK-Burakovsky (keeps Landy for half the face offs and D zone coverage, allows Bura to play with skill to prove himself)
Jost-Kadri-Rantanen (gives Jost an on ice example of how he needs to play in the D zone, and Rants still has someone that can bury his pretty passes)
Wilson-JTC-Donskoi (high-end 3rd line that can play anywhere on the ice, should match up well against any other 3rd, hold its own against 1/2 lines if stuck, and have their way with 4th lines)
Neito-Bellemare-Calvert (quite possibly the best 4th line in the league, and probably better than a lot of 3rd lines, keeps the chemistry of Nieto and Calvert, subbing PB for Carl).
Donskoi is the filler for any top 6 F injury, with Jost sliding to C if it is MacK or Kadri (with some wing shuffling likely, or Kadri/Rants playing as the top line if it is MacK). Kamenev and Greer ought to be the scratches...with Kaut being the first call up if there is more than one injury (and playing). Bowers would be my second call up.
Defense:
Girard-Makar (seems scary to some, but I think the reward outweighs the risk)
Connauton-EJ (To start with, the NHL experience will give KC the edge over Rosen).
Zadorov-Meloche (this will be a mean 3rd pair to punish other teams)
Graves is the scratch, with Cole on LTIR...and I could see Graves/KC platooning next to EJ. Once Cole is back, I think they risk one of KC/Graves to waivers and the other is the scratch if all are healthy. I think MacDonald is a wildcard to be a call up if an RD goes down, as if/when Barbs clears, he stays down....but I would bet on Timmins being the first up after the new year.
I could see Byram getting a few games, and I think he could do fine for the whole season, but I am not sure that Bednar et al. would be comfortable with that. My dream would be Byram next to EJ with the pairs as listed above.