I don't think there's any doubt that Vasilevskiy is the best goalie prospect of any of them, but I would be really surprised if Tampa didn't take a playoff spot. That Atlantic division isn't very good. Are they better than Boston and Toronto? I think so, and even if they are the second best team of that group, they might be able to get in through the wild card, if they are better than Philly or the Isles. If Tampa makes the playoffs, I wouldn't expect a first round loss, especially if they are getting Stamkos back.
And while we're discussing which goalies might be available, I'd throw Bobrovsky's name out there. I'm getting ahead of myself, but if Pittsburgh plays Columbus in the first round, I think Bobrovskiy will be available for the World Championship.