If you absolutely need something to rage about how about Army not trading away expiring UFAs at the last trade deadline when it was clear that last years team wasn't going to go very far in the playoffs. Schwartz has made it clear he wanted to test UFA and we didn't even know if we would have space for Hoffman or Bozak. We could have at bare minimum got another 1st, 2nd and possible 3rd trading those 3.
I think that is an unrealistic
maximum for what we could have gotten for those 3. Berube absolutely cratered Hoffman's value by using him in just about the worst possible deployment until the trade deadline. Hoffman was moved from the 2nd PP unit to the top unit midway through the first game we played post-deadline. Our PP was 23rd in the league on deadline day and we were still not using him to try to fix it. Everything we did with Hoffman decreased his value as a rental trade.
Schwartz returned from injury 3 weeks before the trade deadline and looked awful in his return. 5 points and a -4 in 12 games. Who's paying a 1st for that? And would they be on Schwartz's 15 team no-trade list? Schwartz had little incentive to go to another team shortly before UFA when most of his value in UFA was from his past body of work.
Bozak returned around the same time and looked decent in a 3rd line role upon his return. But he certainly wasn't returning a 1st.
Excluding the very-much-non-rental Mantha trade, only two 1sts and three 2nds changed hands at the deadline this year. One of those 2nds also required the receiving team to send a 3rd round pick the other way, so it wasn't a pure 2nd in value. It was a buyer's market this year and the 2 teams who ultimately gave up 1sts (Toronto and Tampa) targeted players with different skillsets than the ones we potentially would have been selling. Maybe you could argue that the Leafs would have preferred Schwartz over Foligno, but the traits they talked about loving in Foligno weren't Schwartz's strengths.
I think you are vastly overestimating what the market was like had we been sellers at the deadline. And I also think that there is value (both in revenue and organizational credibility) in making the playoffs than selling at the deadline 2 years removed from winning the Cup. I also think that the odds are extremely high that we have Bozak on our roster this upcoming season, which probably isn't the case if we had flipped him at the deadline last year.