Tampa - Added Coleman, Greco & Goodrow while giving up two 1st + a top prospect. Their best add was Coleman who was having a career year while playing 17 minutes a night....he's a 3rd liner
Carolina - added Skjei, Vatanen, Trocheck. Not sold on Vatanen, he's a been awful defensively. Trocheck is a roughly 50pt centerman, but you have to wonder why his TOI has gone from close to 20 minutes TOI to 17 minutes TOI. Skjei is a wild card. I talk to NYR fans and they said he's regressed and many were shocked they got a 1st rounder for him. They had a ok deadline, but I don't see them as a massive threat. They also added 3 guys that we couldn't use
Islanders - The added JGP....not a huge fan as his production has increased with his increased usage in OTT. Is he going to get 20 minutes a night in New York? Not a huge add IMO.
Pittsburgh - Added Zucker, Marleau, Rodrigues and Sheary. Rodrigues and Sheary are bottom 6 forwards. Zucker was a good add, but it cost them 1st + top prospect + NHL Player. Marleau's production has dipped for a 3rd straight year. Maybe they put him with Crosby or Geno and he becomes productive again, but he's not the Marleau many think of.
So of the 4 teams you've listed, Pittsburgh probably improved the most. Tampa improved, but I don't think they improved anymore than Boston did. Carolina improved, but IDK how much better they got defensively. The islanders improved, but I don't think JGP is going to be putting up the same numbers as he did in OTT.
Is the team better than they were before the TDL? Yes and isn't that the job the GM? Remember it takes two teams to make a deal and it sounds like they had the best offer for Palmeiri, but NJD held out for a 1st (which obviously no one paid).