It's tough for me... Usually when these things turn around you have 2 studs that start the movement and the rest start dragging along and buy in. We do have 2 but the problem is that they are stars, not super stars. We need to add another star D-man to this core group in my opinion. You look at all of those teams you mentioned and they all have one thing in common. A top pair that can dominate a game / series. If you can add a Boyle as a free agent in the off-season without taking away from your core group, then yes I say they can / will contend. As is they need some help.
If you do things right, people won't be sure you've done anything at all.