Depends on many factors that are not yet comprehensible. If Ullmark makes an impact as advertised, they should be able to leave two of Detroit, Montreal or Buffalo behind them.
Detroit and Montreal still have a solid prospect pool, though. Depending on who graduates or joins via free agency and trades, things could turn around quickly for anyone.
Detroit is my #1 regress-candidate: some pieces leaving, Seider and Raymond having to sign contracts, Kasper and Danielson not yet ready for the NHL.
Chabot, Stützle (especially!), Sanderson.. all of them have to take the next step.