Probably we'll be about where we're now at trade deadline, which is "likely but not certain to make the playoffs". That's a position where usually relatively few moves of significance are made.
Elliott is very unlikely to go anywhere. He might have not played great, but he's still more than adequate as a backup, which is more than what we know of our AHL goalies, and something we'll need anyway. I also don't see why other teams would be that interested in him, even for a short while.
Engelland or Wideman seem by far the most likely players to move listed on the OP. Considering we're technically just as interested in defensive depth as any other team, it would probably take a serious overpayment for someone to get either one, but since it's trade deadline we're talking about, serious overpayment could happen. One can hope
(Not that I have anything against either guy staying or even re-signing them for a reasonable price.)
Someone suggested Bouma, and that would seem very possible. Not a lot of value, but sometimes teams are looking for a player they can put on the 4th line and not worry about. Bouma can play that role.
But I'm going to go with Wideman, mostly because he's got name recognition, and that seems to play a role when GM's get desperate.