I do not believe there are moves out there that really change the TOI for Dahlin, Samuelsson, and Power.
Dahlin is playing in the same range as Makar, Doughty, and Chabot. I do not believe that anyone is saying that Ottawa is hurting Chabot or Colorado is hurting Makar by playing them as much as they are.
Samuelsson is 42nd in TOI/GP and is playing as much as guys like Pesce and Slavin are for Carolina.
Power is 23rd and leads all rookies in TOI/GP. He is playing 3 minutes-ish more per game than Sanderson and Guhle. But, I do not know that it is really hurting his development. I think the issue is more about getting him a better partner than getting better 3rd pairing guys to shift his PK and a bit of ES TOI to that pair.
Marek and Friedman have said that the few healthy Av's usage (Makar and Ranatanen in particular) could cost the Avs in the near future if those guys get hurt or burned out.
I do not see any moves on D that block a prospect. The challenge with Chychrun is less about blocking guys and more about the sky high asking price that the Yotes have and that every other GM around the league has said is too rich for their blood.
I also think that there are serious questions about Chychrun and the fit here because he is built in the Dahlin/Power mold and Adams may want more of a Samuelsson type if they are to add someone.
That is why the Ekholm idea makes more sense to me from a Sabres POV.
Chychrun is more than just an offensive defenseman.