You realize that their farm at that point, outside of Malkin and Crosby, did not produce a single top-6 forward, right? In fact, the overall failure of the Penguins drafting and development beyond those guys is the central reason they went all those years without Cups and had to mortgage what was left of their future to win the 16 and 17 Cups (which I'm not criticizing those moves, just pointing out they were forced to make them). I don't feel like it's wildly optimistic to think we might do better on those pieces... just regular optimistic.
I don't have a lack of patience. I believe in thinking strategically while being flexible and adaptable to what's out there, rather than rigidly adhering to a sketched up plan made before you knew what was available when. If I were impatient, I'd be talking about signing Karlsson and giving the reasoning that we might not have a 1st pairing RD prospect in the organization, damn his issues. But in Karlsson's case, I'm leery of his injury history. Or I'd be talking about signing Duchene and giving the reasoning that Chytil looks like he might be a winger, damn his issues. But in Duchene's case, I don't quite buy that he's matured enough to be an effective player in the comfort of a long-term deal. Individual reasons for individual players.
Panarin doesn't have the issues those guys have and is an elite talent, which is why I maintain my interest in him. As I've said, I have no problem with the Rangers deciding that they feel he, as an individual, isn't the right fit.