The dream add to me would be Trouba. Subban is better but that big cap hit might be tough. I'd still trade for Subban if he were our only major option though.
Jets fans say he's staying, and playing on the left side. I wonder about that, and I'm not so sure that Jets fans are necessarily on the same page as their GM and ownership. But yeah, we need to look at lots of different options, and we can't linger on a dream candidate too long if a genuine option opens up. Quite frankly, any of those right shot Dmen who have great puck skills would be fantastic to add, and our forwards would make them look like a superstar no matter who it was. When a player fits a need well, they end up looking good.
edit: but only get Dan Boyle as a 3rd pairing guy. That's all we can count on, and I doubt he's coming here.
I would also wonder if Shea Weber is available for the right cost. The odds there might be low, but it's worth a phone call to Nashville to pick their brains about