I'd like to add some caveats as its not as rainbows and butterflies as you'd like to make it seem.
After his new team bump Blackwood now has a .901 SV% in his last 15 games and his GSAA over that time is -1.64. Obviously still better than what we're getting, but he really hasn't been all that good recently.
Necas has fit in fine, but he hasn't covered the loss of Rantanen at all. 31G 87P pace vs. 42G 107P pace. The discrepancy is also sizeable looking at even strength production. Necas has 9 even strength points in 17 games while Rantanen had 45 in 49 games (33 in 49 games if you take out empty net). Pretty sizeable downgrade thus far.
Nelson should be a good pickup, but he's not the same player he once was.
The jury is still out on Coyle. Has had a terrible year, but willing to cut him some slack given Boston struggled as a whole (similar to Frederic).
Drury doesn't move the needle for me. Undersized and both on ice results and underlying numbers have been pretty underwhelming since joining Colorado. Doesn't really move the needle.
Lindgren has been awful the past 2 seasons in NY, and has dreadful underlying numbers since joining Colorado.