TO the OP, you show rookies as reasons for teams to get better. Ekblad, the Reinharts, Bennett. Very few players in NHL history make an improvement to their team in the rookie year. Most need to be sheltered, especially defenseman.
There's two simple ways to improve your team, continued development and free agents. We should see both of those things as a plus for us. I think guys like Kadri, Gardiner and Reilly will easily see improvement in their games, especially Kadri who has shown to be much better already.
It also wouldn't be out of the realm of possibilities to seee improvements in the game of guys in their mid to late 20's. That's almost the entire team. Kessel, JVR, Bernier and Bozak may all see slight improvements, especially in the intangibles, which is a very common thing for players as they mature.
Adding Komarov, Polak and Robidas in place of Gunnarson, Gleason and reducing the ice time of Orr and Franson is an improvement.
Santorelli and Kontiola is likely a wash for ~30 games of Bolland and whatever positives Mason Raymond brings, if any.
Florida improved with Luongo. That's about it. And he hasn't been all that great of late. Guys like Barkov, Kulikov, Bjugstad, Huberdeau could all see anywhere from slight to vast improvements. IMO most of the improvements will be with Huberdeau.
Luongo could net them 5-10 more wins, and Bolland in (at best) 60 games could get another 5 or so. But that's still not a huge improvement from the worst team in the league. 20 more points would still leave them in the bottom 10.
I believe the Flames are worse then us. Goaltending got a slight improvement, but overall they didn't really change anything. Monahan will improve a bit, but is still way to young to really carry any semblance of the team. Bollig is a 3rd liner at best and Raymond is a depth player better served on a deep team.
To expect BUF to surpass us is laughable. They were 32 pts behind us and lost a G everyone expects to make a difference for another bottom team. What does that say, prognosticators? Who is better with Miller? Because someone had a crap G last year. If he's good enough to be OK for VAN, which I think he is, he is a huge loss to a terrible team. Gionta, Moulson and Gorges are solid depth moves that bring in much needed leadership, but they aren't players you win with. Myers could be see an improvement, as could Hodgson, but the best way this team improves is when Reinhart, Zadarov and Ristolainen are a few years into their careers.
The Jets are likely to get worse, unless they get back a great package for Kane. Trouba could be a bit better (and way more hyped) but most of their internal growth is minimal at best.
Our only real way to bomb is if Carlyle is ignored and the team allows it for a blatant tank. This team has to be better then last years. How much is unknown.
We've definitely improved our bottom 6. Our top 6 should see some improvement through growth and development, and our D got tougher and could see some improvement through growth and development. If Bernier has a full year, we have very little chance at being bad, IMO.