Stl won't deal tarasenko, but would you think about moving Cory for Backes, Fabbri and Barbreshev?
Schneider is a top flight (perhaps "elite") goaltender in his prime. Per Lou, the Devils aren't looking for many pieces - they're looking to add two top six players (C and/or RW).
Given that, trading Cory needs to net at least one high end top 6 forward. No need for multiple depth forwards and or defense prospects. High risk prospects should only be a throw in / add to even out a deal (e.g., Cory + Gelinas = top 6 forward + prospect).
This is why people keep saying Tarasenko. No one knows the other prospects enough to be able to tell if they're sure to have NHL success. And it's why "Backes + Fabbri + Barbashev" is hard to gauge. Backes is a good player, but has only topped 60 points once on some stacked St. Louis teams. He's also about to turn 31 and is UFA next year. So, he's really a stop gap for the Devils / cap relief for St. Louis (though, I think St. Louis would value him higher). For the Devils, the deal seems to really be about Fabbri and Barbashev - which seems like not so much in return for a proven starting goaltender who's save percentage ranking over the last few years (like the stat or not) was:
2015: 5th in NHL
2014: T - 13th in NHL
2013: 4th in NHL
2012: 2nd in NHL
Then again, if the Lou feels that Barbashev and Fabbri are two top 6 players in 1 - 2 years time, then that's a great haul. It all depends on how sure the prospects are, and how far they are from arriving.
Based on what I know - which is that prospects playing in juniors are generally high risk, and that I know almost nothing specific other than stats about either prospect - I think it's the wrong type of deal for the Devils.