Bizarre deadline; would have actually preferred Treliving doing nothing. Adding Gustaffson makes sense on some level but giving up a fourth for Forbort? Baffling to put it mildly.
Given none of the defencemen on the roster were traded, it might mean Hamonic and Valimaki are done for the season. Or something involving one or more of Kylington, Brodie and Hanifin fell through. But even then, the Forbort add makes no sense.
With the assumptions above, the defence will most likely be:
Giordano-Brodie
Hanifin-Andersson
Gustaffson-Stone/Forbort
Forbort/Stone
With Kylington, Davidson and Yelesin as black aces or sent down.
But that third pairing is going to struggle defensively. And Kylington should ask for a trade, or at least go public with one; pretty clear the organization isn't interested in developing him.