It's generally going to be the same 5 or so teams in the picture every year. Only about 2-3 switch out and what not. For instance, the Devils are most assuredly going to be a potentially big buyer at the deadline, whereas St. Louis is likely going to sell a couple expiring assets. It ain't like there's this wholesale change every season between the haves and have-nots.
Toronto's issue isn't being gun-shy, they definitely won't be. It's cap space, plain and simple. If they can somehow make it work they gotta find some scoring depth up front. ANY scoring depth will do. That's been their big issue. Well, that and defensive breakdowns but I think they're finally going to avoid that particular rut this time around.
The Blues will be kind of interesting to watch. Armstrong is not shy at all about pulling the plug, he's done so before even when the team was on the fringe of the playoff picture (which they're not right now). I don't recall Nashville being so quick to give up on the season but they can't possibly be thinking "go for it!" right now.
And if Tampa wants to load up at the deadline, they'll find a way. They always do.