Vegas, NJ, and COL are a good bet. Vegas for obvious reasons (career seasons from everyone) and NJ and COL (need Hall and McKinnon to repeat their career seasons) in order to have a chance at the playoffs.
There were three teams that dropped over 30 points in the standings between 16-17 and 17-18. I believe only one did it the year before. That what’s the biggest step back has been the last couple years, and I don’t see NJ or Colorado as having 65 point rosters. The biggest step back will come from someone with more to lose.