The Penguins got better BY selling off a valuable asset. So, there is no reason to stop now.
I agree with moving out Reilly Smith, Tristan Jarry, Lars Eller and Noel Acciari. You likely cannot make a hockey trade for either Rakell or Graves, so you hold off. Rust, as has been mentioned ad nauseum, is not going anywhere. He does not want to move. They do not want to move him. To discuss it is rather pointless.
That is where I would stop. I am not trading Karlsson. With Karlsson, they can make the playoffs in 2024-25. Without him, you might as well trade Crosby too.
As long as this team gets BETTER not worse when going younger, they should continue in that direction.