Well, it depends on how much he improves in the offseason. If he works out and bulks up, and prepares for the grind, then i can see him being somewhere between very impressive and ****ing amazing for a rookie. Take into consideration though that he is going to get quality amounts of power play time, most likely on the first unit.
Also, i am of the opinion that 10 games into the season, he will supplant Babchuk in the top 4.
Personally I would take McBain, but that's just me.
I'd wait. McBain's numbers are probably a little inflated at the moment because of the dumping of vets last spring and his increased PP time. Now, with Corvo and Babchuk back, he'll see less time there, and he's likely to spend less time on the ice (per game). He'll be a better value during the season rather than at the outset.
Hedman projects to be a #1 d-man who plays in all situations and will be getting tons of icetime for TBL as they rebuild. McBain as of now projects to be a 2nd pairing guy (maybe a 1st depending on who he's paired with) and might start out on the bottom pairing this season.
I'd definitely keep Hedman, seems to me he's going to have more opportunities for points.
Here is my point of view on the matter. Jamie McBain at this stage reminds me a lot of Matt Carle when he first hit the scene with San Jose. If he follows that same curve, we could be looking at a 40 point season for him this year. I really think he'll get a lot of opportunities on the powerplay this year.
Hedman reminds me more of Mattias Ohlund, which is why he was such a good mentor for him. He's probably not going to produce more than a few 30-35 point seasons but his value will be in his steady defense. I just don't see the offensive flair that other folks see with this kid.
Let's not forget Hedman is just 19 and still getting used to his huge frame and playing on NA ice. He's not ever going to be the best offensive d-man in the league but I wouldn't sell his offensive game short either. Just from watching him play, or even looking at random youtube clibs you can tell the talent is there. He's not flashy but I think part of that has to do with him still growing into his body, he looks awkward out there at times. I just think projecting him to be a 40 point guy is a bit on the low end even if that's still great production. In 3 or 4 years I could see him putting up 50-60 point seasons once he starts to enter his prime.
I suppose it's all about how ur league's set up... I think McBain has the potential to score SLIGHTLY more points, but Hedman's not close behind in the points department and will be far better defensively. If ur league does hits and blocked shots, I take Hedman. If not, on MY team I still take Hedman, but clearly everyone here is very high on McBain, so it's a thing of personal preference...