They certainly have the talent up front. They will score some goals.
On paper, they had a good D last year, and assuming Kulikov last year was an outlier, then their D next year as a group (Buff, Trouba, Kulikov, Morrissey, Myers, Enstrom) will be good. This is easily the best D this team has had since moving from Atlanta, and likely ever. They need that D to stay in the lineup much more this year than they did last year. Trouba sat out for 20+ games, Enstrom was injured for a good spell, and Myers only played around 10 games. IMO, he was fantastic in those games. But he needs 82 of them.
I think it ultimately comes down to goaltending though. If Steve Mason can be a steady goalie, and also steal a few games, I think the Jets are a playoff team.
I think by 30 games in, if they are not trending that way, Paul Maurice will get fired and then who knows what happens.