I would be very happy with this scenario.
Dobson is often overlooked when it comes to this D class, but he has legit number one potential in the NHL. Very smooth skater, rock solid defense, great outlet passing ability, he can play in any situation and eat up difficult minutes. Really mature kid who looks like he still has room to grow physically while already being this good, I would take him at 8 or 9 and not look back. I was always impressed with Ty Smith's smarts in the WHL, but man Dobson is a really intelligent player himself.
The thing I like most about Dobson is that he's really good defensively at a young age. He uses his feet and reach to get his stick on most pucks that enter his zone. Once he gets it, he always makes the right play under pressure. He'll make a smart outlet play out of the zone and immediately join the rush. This team needs more D like him who don't get trapped in their own end. That is the biggest weakness of our defense, individually with guys like Hickey who are horrendous at it, and collectively overall over the years. Dobson would immediately correct it. I think he needs an extra year to fill out and learn to use his size better, but after that he'll be NHL ready.
The other thing I really like is his great wrist shot from the point. While Bouchard's calling card is his bomb of a slapper, Dobson doesn't have quite the same velocity on his shot, but he gets it off quick and employs a variety of shots. Really love that he'll wrist it from just about anywhere and can hit the net, Potvin-esque in that way. He also seems to setup on the off-wing at the top of the circles and one-time it like Pulock just did on his last two goals versus Tampa. Really quick release and I see him being able to translate this ability to the NHL.
As much as I really love Ty Smith, I think I may ultimately prefer Dobson due to his size, skating, skill, and intelligence. You don't get access to that combination very often in a defense prospect who very clearly has #1D potential. We need him, badly.