I honestly don't know how the bottom guys have any votes. Even if they all reach their potential it would be at best a push.
can any of the young D peak as high as Karlsson did? possibly but I doubt it.
Disagree strongly here. There was a similar poll done about forwards that is much more lopsided. I think for the D it's much more reasonable.
None of the D listed here are great in an all-time sense. You can probably argue a couple of them as top 100 players all-time, but they're fringe top 100 players, lower end.
Dahlin's ceiling is sky-high, higher than what Karlsson or any of the others did. I think him ending up the best of the 8 players here isn't unrealistic, and at the very least he should be able to come close to any of the 4 older ones.
Makar/Hughes also have sky high ceilings, if a bit less. More than just ceiling - based on year 1, I think the odds of them reaching high is quite likely. Heisk started out great too, and should continue to have a strong career.
One issue with the older group is that they aren't ageing well at all, surprisingly so.
Keith is 36 now - but he's been trending down for a few years already. Defensemen like him will often age pretty well, sometimes even into their lates 30s (Bourque, Lidstrom, Chara, MacInnis) but it doesn't seem to be the case for him.
Both Doughty and Karlsson were fantastic in their 20s (both behind Makar/Hughes/Heisk/Dahlin as rookies though) but seemed to have hit a bit of a wall after age 28. I'm personally of the opinion they can both rebound still and go back to being top 2 in league, but they haven't yet and maybe i'm wrong. So - the jury is still very much out to see how well they age, and if they don't age well the door's wide open for the young ones to overtake them.
Hedman - he was a bit more of a late bloomer. Not that different than Lidstrom tbh, strong early on but just got stronger. We'll see how things shape out for him in his 30s, but i'd have him last in the first group for now.
Considering the 4 young ones seem like some of the most surefire young NHL stars to reach their potential to me - I think they're all projecting to have tremendous careers (3/4 at least, if one falls back). I think this ends up being really close.
I voted for the older ones - simply because they've already reached their potentials and it's pretty great - but I think this is very close in the end.