I don't think you can consider Kesler or Boychuk for this list because they went straight to the IR/LTIR list due to injury. All the others are a burden because they are still "playing," and I use the term loosely.
Nylander is a steal of a contract in todays NHL lul
Kane's contract only went bad due to allegations from his wife who just wants her 10 seconds of fame. Not saying hes in the clear either but neither is clear of each others allegations