Personally, I think they throw Duchene on that 2nd line with Benn and Johnston. Slot Dadonov on Seguin's wing, opposite Marchment

Robertson-Hintz-Pavelski
Benn-Johnston-Duchene
Marchment-Seguin-Dadonov
Steel-Faksa-Dellandrea

For defense, I'd love to see Harley on the top pair with Heiskanen, but Dallas simply isn't deep enough behind them to justify having them on the same pair. Would MUCH rather have Lindell on the top pair than Suter, but Suter seems to have the inside track right now, much to the annoyance of most Stars fans. Hakanpaa is also going to be out to start the year, so I think you see Hanley on that 2nd pair with Harley:

Suter-Heiskanen
Harley-Hanley
Lindell-Lundkvist

Goalies are goalies. Pretty straightforward here:

Oettinger
Wedgewood

I’m thinking pretty much the same, only thing different is I’d stay those forward lines as they are. I wouldn’t want to break the chemistry between that line (as they were good in the later part of last season), and putting Duchene besides Seguin allows them to rotate at centre opposed to Seguin playing centre the entire season (because last year he spent a considerable amount of time on the wing).