What makes you think that? As it stands now, and all things being equal, the main differences will be: Parise for the entire year, Tedenby/Josefson improving, maybe a 19 year old Larsson/Coutier; no Langs, Arnott and maybe no Rolston, Clarkson, Andy Greene; other players past their prime getting older (White, Brodeur, Elias).
You don't stink this badly for it just to be a fluke. No, we're not late 90s Islanders bad. There's a good core of players. But the depth, especially at the blue-line, is more than a year away from being good enough to comfortably make the playoffs.
the flyers made the playoffs in 06. they made the playoffs in 08. in 07 they finished dead last.
the hurricanes made the playoffs in 09. they were the 7th worst team in the nhl last season. they are around nhl average this season, things could go either way for them.
a big part of things would be either getting rid of brodeur or getting a 1B goalie who can spell brodeur for 40 or so games.