With the moving of Hodgson back inside to center, it looks like they'll roll with Hodgson-Ennis-Girgensons down the middle if (when?) they send Reinhart back to juniors. That also means Grigorenko stays in the AHL for awhile, something he definitely needs.
I could see them calling up Larsson if Reinhart goes back to Kootenay.
If they want both Hodgson and Ennis at center, I'm not seeing Grigorenko getting a call up so soon. That's essentially what you have surmised, but I'm not so sure he "needs" to stay in the AHL for his own sake? I can see that a solid stretch (even a year) in the AHL can't be bad for his development, but would a top six role with the Sabres hurt?
Thing is, while the Sabres look to have some depth at center on the surface, I'm starting to think they've got too many of the same two-way type of center and too few of the raw offensive type?
Between them, Hodgson and Ennis would make a sweet 1st line center of the raw offensive type. I mean, imagine Hodgson's vision, playmaking gifts, in-tight soft hands and rock half slapper, mixed into Ennis' foot speed and half-wall grinding heart!
I'm not saying Hodgson is a slow skater, he's actually not any more, but he's topping out average while Ennis is and will always be faster. I'm also not saying Hodgson can't grind along the half-wall or into the corners because he does, but not consistently (that frazzles me too!) the way Ennis is always game to keep digging. Comparably, Ennis just doesn't have Hodgson's consistent knack for finding his linemates, cycling the puck and getting off shots. So yeah, between them, as one player, we'd have a true 1st line center. As it is though, individually neither are suited to the role, and both could be moved down or to wing.
Which puts us into Girgensens' hands... Is he a true 1st line center? I *think* he could be and with his game mentality and drive so far, I'm boggled that Nolan hasn't at least tried him out for a couple games between two talented - and experienced - wingers. Hodgson/Stewart was just one game, and Hodgson isn't exactly the most experienced winger we have - Moulson would fit that though. So why not give Girgensens a few games between Moulson and Stewart - along with the top line minutes and power-play opportunity!!
Instead it seems Girgensens is being groomed for a primarily two-way role (3C or 2C, depending on ice time any given day), but isn't that where Larrson could thrive too? And Reinhart apparently? If Grigorenko is another two-way center type, where is the space for him in all of that? If instead he could be plugged into a more offensively focused role, I'd go with -
Moulson - Girgensens - Stewart
Hodgson - Grigorenko - Stafford
Folingo/Ennis - Larrson/Ennis - Gionta
Folingo/Des - Larsson/Flynn - Insert-A-Name
Who gets the call up, or if there is room for both Grigorenko and Larrson, I think really comes down to how much of an offensive role they're willing to plug Girgensens into and what type of role that opens up for the youth behind him.
I'd like to imagine that they don't hold Girgensens or Grigorenko back just to keep Ennis as a center. If Hodgson can readily slip between wing and center, Ennis will have the same ability - and perhaps even be better suited to wing where his foot speed along the outside will help generate more space.