The Flames penalty kill can't exactly afford to lose Nordstrom. The Flames have multiple wingers who CAN kill penalties but they have not proven to be able to log the big minutes that Nordstrom does. Nordstrom is the only winger with >2 minutes on the PK per game with the Flames. Mangiapane is 2nd with 1:19. Tkachuk, Monahan, Gaudreau, Dube, Leivo, Lucic, and Simon do not see any form of significant pp time (below 11 seconds for each of them. Bennett is 3rd with 42 seconds a game. While Nordstrom's 5v5 play leaves a lot to be desired, sitting Nordstrom for someone who cannot kill penalties after we already lost Ryan who was huge in killing penalties.
If you want to elevate Tkachuk or Gaudreau into a PK role then you lose out on double-shifting them with the 4th line as was done yesterday. If you move Monahan onto the PK you now don't have a big 'power line' to go to after a PK like Gaudreau - Monahan - Tkachuk BECAUSE of how hard those minutes are. None of the options are proven and have eaten those big minutes. It makes the most sense to give Nordstrom his 7 minutes a game in a limited spot with the likes of Leivo, Froese, and Simon cycling in around him on that 4th line seems reasonable to me. In all honesty the penalties he takes are what holds him back from being super effective, because other than that he brings a good skillset for a 4th liner. Speed, gets in on the forecheck, can kill penalties. The bigger issue is when he is elevated to playing 4 on 4 agianst top lines or when he's put onto the top line. If he gets a shift here or there and can kill penalties effectively then there's no reason not to have him. Maybe sit him in a game against Ottawa with their bad powerplay, but against Winnipeg, Toronto, Edmonton, Montreal and their strong PP's, he needs to be in the lineup to open up others in the lineup.