I agree we're snake bitten offensively and agree we haven't been that impressive outside of Talbot and Kassian, but I disagree that those are the guys that have held us back per se. I would argue that second line is a big reason we're not down in this series. They've kept SJ's big guns off the score-sheet at evens all series. That alone is why I wouldn't tinker with line 2.
Desharnais isn't providing anything valuable right now. If you can plug Lander into that role you immediately improve your face-off results and have another option on you PK. I think that's a no-brainer at this point.
They need to score goals though. Hate to say it but look at the Leafs. JVR, Kadri, Bozak, Nylander, Hyman ... all guys scoring in the playoffs.
This isn't the NBA, you can't win with one guy driving the entire offence. See also the 2006 Oilers had Horcoff, Stoll, Smyth, Pisani, Torres, Peca, Hemsky, Samsonov, hell even Brad Winchester contributing goals.
You can't just rely on McDavid to do everything and even when he does, Maroon and Draisaitl have been slow this series.
I'd give Maroon/McDavid/Draisaitl one more chance to start the next period, but if those two are still sluggish, I move Lucic up to line one with McDavid.
And while I like RNH and Eberle stepping up their intensity somewhat, this the Stanley Cup playoffs. There are no participation ribbons here. We need actual offensive production from them.