Definitely going to miss ZLH. If Colorado gives him a chance I think he could be a solid bottom six guy.
With Svechkov, I question his long-term fit in the NHL. Not enough skill to be a top six C, but not enough grit/defense to be bottom six. Then again, Bruno really didn't do him any favors and he's still young. Unfortunately, Bednar is similar to Brunette with his treatment of younger guys.
Drury is a known commodity, fills a desperate need, is solid as hell, and is still young enough to stay for a while.
The trade makes sense to me, as honestly I don't see ZLH or Svech exceeding what Drury provides, and there is a non-zero chance they don't even reach his value.