I also liked McGinn with Eichel. McGinn created a lot of havoc along the boards with his body and high energy play, and that jives with Eichel's more perimeter-style game. Once Eichel gets better about figuring out how to find/slip into open, high % shooting areas, he'll really benefit from a pairing like that.
I agree that Eichel would benefit from getting some time with ROR to build his confidence and see the game from another perspective. I know Eichel's future is at C, but he's really not using his teammates well -- he only really creates offense off the rush at this point. Get him some playing time with a cerebral guy like ROR, who creates by cycling and breaking the D down, and maybe things will start to click for Jack. Who knows, it might really pay off in the long term.
With skaters playing to their potential, and with Girgs back, I'd try:
Kane-ROR-Ennis *
McGinn-Eichel-Reinhart
Moulson-Girgensons-Larsson
Foligno/Des-Legwand-Gionta
*I hate to put Ennis and Kane on the same line, but Ennis is one of the most problematic skaters to ice. ROR's patient/sit-back-and-see-WTF-my-teammates-are-going-to-do play style would help cover the mistakes of two guys that tend to play with reckless abandon, while also playing to their strengths.
... But actually, in trying to build these lines, you realize what a mess the makeup of this roster is. It's hard when you've got guys like Kane and Ennis who don't really use teammates well. Especially Ennis, who carries the puck, but whose turnovers make him a defensive liability, and yet isn't a top line threat. And even Eichel, for that matter, though I'm not dogging him for it -- he's young and learning. Like someone said earlier, his individual talent is so great it's totally likely he hasn't really had to learn how to get the most out of smart positioning yet.
That said, I am not willing to defend Bylsma on his Moulson-ROR-Gionta masterpiece. I can defend him for trying it but at this point he has to understand that it's broken and try something else.
Hopefully, that's the silver lining of this shutout. I was honestly kind of waiting for a blowout/bad loss before he broke Moulson-ROR-Gionta up. Now's your chance Disco, don't disappoint.