I think Stepan playing without MSL is a bonus in itself.
We'll be fine without MSL. This team has covered big injuries before. McDonagh went down and pretty much everyone on D stepped up. Hank went down and Talbot stepped up. I think it's just a matter of who steps up in MSL's absence. My money is on Stepan.
Miller might benefit a lot playing with Stepan as well. Don't forget him and Kreider look like fire when they are on a line together.
I'd like to see those lines in action. Miller essentially getting top 6 time, which is what he needs.
Hell, if it works, you have more options when MSL comes back.
Kreder-Stepan-Miller
Nash-Brassard-Zuccarello
Hagelin-Hayes-Fast
Sheppard-Moore-Glass
Then when MSL returns, if that top 6 is in functional shape:
Kreder-Stepan-Miller
Nash-Brassard-Zuccarello
Hagelin-Hayes-MSL
Sheppard/Glass-Moore-Fast
Sheppard/Glass
It's already been said that MSL and Nash thrive when playing with other players that drive possession. it's no wonder Nash caught fire when he finally got a solidified spot with Zuccarello and Brassard. I think MSL will benefit very much by playing with Hagelin (anyone remember that sexy backwards pass from Hagelin as he whipped around the net and left it for MSL who had a wide open net? oh yeah, I wanna see more of that), and will also benefit additionally by going against bottom 6 competition--allows him more room to work, while leaving Hagelin and Hayes intact