Brodzinski and Pitlick would be the guys to go out once Kakko or Chytil are back or there's an upgrade somewhere. That seems obvious to me, even with the little kicks Brodzinski throws in. Perfect 13th/call-up guy, and he knows the role.
I do think Edstrom looked good, and I do love what Cuylle brings, but I do imagine Cuylle will look a bit off in the second half of the season as the grind gets to him. Having a 4th line of experienced vets and not a random assortment of kids is a big difference this year, and Bonino has been great on the PK.
It's all about getting Kakko and Chytil back(or some kind of trade), and getting Bonino back to 4C with Vesey and Goodrow. Losing Kakko and Chytil has hurt depth a bit.
As for defense, there needs to be more reliability. As good as the Rangers D looked to start the season, teams have caught on and can expose the LD cheating up. It can work in the regular season, but that would get destroyed in the playoffs.