Is Steeves making the team?
I doubt it. Assuming Tavares and Engvall are both out to start the season, but everyone else is healthy, I think we'll see something like:
Bunting - Matthews - Marner
Robertson - Kerfoot - Nylander
Jarnkrok - Kampf - Malgin
ZAR - Gaudette - Aube-Kubel
Simmonds
If Engvall is back by the start of the season, I'd play him at 3C and bump Gaudette (who has been pretty unimpressive):
Bunting - Matthews - Marner
Robertson - Kerfoot - Nylander
Jarnkrok - Engvall - Malgin
ZAR - Kampf - Aube-Kubel
Simmonds
And then when 100% healthy, I'd edge towards bumping Malgin:
Bunting - Matthews - Marner
Robertson - JT - Nylander
Jarnkrok - Engvall - Kerfoot
ZAR - Kampf - Aube-Kubel
Simmonds
Malgin vs. Robertson is highly arguable, but it's close enough that I'd lean towards giving Robertson the nod. I think Malgin is a bit better right now, but only a touch, and Robertson is at an age where his rate of improvement is much faster. I think given a full regular season development at the NHL level, Robertson is fairly likely to be ahead of Malgin by the playoffs.