I agree, but I don't think they want to block Morrow next year. And the bigger question is whether Karlsson is the style of RD they would bring in vs scenario 2 where a more defensive RD is brought in to pair with Slavin while Ghost, Morrow, and (less) Nikishin are the more offensive D.I'm not disagree with you necessarily, but at the same time, I don't think bringing in EK delays either Nikishin or Morrow. There are 4 sign dmen next season. Add those two, it's 6. Most teams what to have that depth up to 8 or so. Injuries happen.
I don't think the Hurricanes should be in the business of skimping at this point. They need to start putting some playoff wins together instead of worrying about the next corner with the crop of prospects.