Yeap, Samuelsson cannot be considered a completely legit and reliable top 4 D for me, at least because of his constant injuries. In theory, we can of course put him with Dahlin and if it works, then ok, but then we will need some decent LD in the third pair, who in case of another injury to Sammy can jump to the first pair with Dahlin and be fine. Such an option could make sense. But on the other hand, we could also add a defenseman to the first pair with Dahlin, who is more proven and does not get so many injuries. For example, Gavrikov or Pionk in UFA (these are just some of the options).
I think trading one of Power/Byram could make sense, in theory even both could make sense if the deal is really good for us and we can get a good PMD for the second pair return, but I think that's unrealistic. It's tough about Byram, he can't play without Dahlin and obviously shouldn't get a 7-8 million contract, but do we want to pay him 7-8 million even when he plays with Dahlin? I'm not sure either. Bryson didn't play many good games with Power, but overall yes, Power needs at least a decent complementary player who can eat top 4 minutes. Unfortunately Adams isn't very smart, since Marino and several other RDs without trade protection were traded not long ago and Kevyn for some reason didn't think about it and added one of them.
Yeap, Clifton makes a lot of mistakes, we also added JBD and hopefully he can be a decent third pairing guy, but we also might have cap issues so we might have to trade some of our defensemen to somehow improve the roster and fit into the cap.