Laine - Jenner - Gaudreau
Bemström - Roslovic - Voracek
Nyquist - Sillinger - Johnson
Robinson/Foudy - Kuraly - Danforth
1st line is trying to go for the best possible line with the available players, hoping for good Laine-Gaudreau connection and that Jenner can keep up his good play from last season. Laine-Jenner also worked together excellent.
2nd line is all about giving Bemström a top6 opportunity to see if he can stay a positive contributor playing higher up and with two offensive minded players. The success of this line depends on Bemström being solid and Roslovic connecting with Voracek, and hoping that Roslovic's C-game is "good enough". If everything clicks, this could be a very solid 2nd line, though I wouldn't bet on it.
3rd line is where you give youngsters a chance, with Nyquist being the veteran presence. I'd like to see Sillinger play well at center and on the other wing you can try out Johnson/Marchenko/Chinakhov. I kinda expect to see max 2 of them in the NHL at the same time.
4th line is supposed to play a solid game and be capable of eating minutes if 3rd line is having a bad night, which I would expect to happen some nights.
Some possible adjustments I see is swapping Bemström and Nyquist, or giving Bemström's spot to one of the youngsters if they look like they're up for it. Bemström is a proven bottom-6er in my mind and guys like Johnson I see as players who should either play in the minors or in a top-6 role, with 3rd line being just a half-way house to give them time to adjust.