A number of Rangers fans were amenable to Kostin and a 2nd for Zucc. Maybe a 1st if salary needed to be retained or a contract like Sobokta had to be taken back. Doesn't seem unreasonable for a player of Zuccarello's caliber, and the Blues still keep their top two forward prospects.
Personally, I'd like the Blues to start playing better hockey with what they have before they make a trade like that. I know they're near the top of their division, but they're 15-14-2 in their last 31 games (including the win tonight), and have generally played pretty bad hockey (relative to their usual standards) for the last two months straight.
They've looked a bit better the last two games, but I still need to see an extended run of better play before I'm convinced the Blues have any real shot this year. What's the point in paying for two playoff runs if one of them is essentially going to be a write-off because the team is playing bad hockey?
Armstrong has said some things that indicate he might be thinking along those lines as well (this team isn't as competitive as past ones that we've had, and that he's looking for moves that improve the Blues chances beyond this current year), but who really knows what the organization is thinking. He did say that he wasn't interested in anyone at their current asking price. I don't know if the Blues would be interested in re-signing any of the players they've been linked to by the media, so that would probably factor into what they're willing to give up as well.
There seems to be a lot of good winger options potentially on the table with 1-2 years on remaining on their contracts after this one, so if he does pull the trigger, I'd expect him to go with the guy that has the lowest price tag, if there's one that makes sense at all. I don't get the feeling that there's a sense of desperation to add someone before the deadline.
Zuccarello and Hoffman would seem to have the inside track in that they can both play RW, which is by far the biggest area of short-term need, though they are both LH shots which is not a positive for the Blues at this point. Being so LH heavy in their top 9 is actively hurting the Blues...especially on the PP.
The Blues have very little deadline space, so the Rangers would have to retain or take salary back to make it work. The Blues don't have a traditional cap dump to offer (in the sense that they would need to send back a reasonable contributor who is fairly compensated for what they do). I doubt the Blues are going to want to up the futures value of their offer
and send back a useful player to make the dollars work. I'd see it more as upping the value if the Rangers eat salary, or subbing out the 2nd for the useful player if they don't. The Blues are known to have turned down an offer of a 2nd for Sobotka already, to give you some idea of how he's valued.