D is pretty light league wide. How many cup-worthy #1 D are there in the league? Makar, Hughes, Dahlin, Heiskanen, and Morrisey. I'd include McAvoy despite a rough year. Werenski, Bouchard, Fox, Slavin, and Forsling are excellent though they each lean heavily one way or the other. Ideally you have an all situations #1, but failing that an elite offensive or defensive guy you can count on for 24 minutes in the playoffs isn't bad.
Hedman, Doughty, Pietro are there, but on the way out. On the flip side, Faber and Seider look like the next ones to be established #1s, but a step (or two) down from those guys. After that it's guys like Hanifin, Theodore, Sanheim, and Weegar who I'd take in a heartbeat, but not sure they are cup winning #1s. I'd say that's the top 20. #2s are just as thin (and I think guys like Jones, Nurse fit there despite all the shit they get), and most team's don't even have four top 4 d-men.
I do wonder if each of Schaefer, Verhoeff, Reid, and Dupont become #1 Ds. If one of those guys ends up in San Jose, never let them leave. Aside from Dupont's lack of size (who looks like the premier offensive D since I've been on HF), they have it all.