When a team is "tough to play against" it means a team that will go through a wall to beat you. It means a team who will grind you into the dust, run you over, and work you to the absolute limit to secure two points on a random Tuesday night in January. We added a bunch of yappers, one of whom will actually drop the gloves but can't skate. While it's good to have yappers who will draw attention away from our core who can't hack the pressure, nothing about our core (the guys who drive the bus) has changed and they've never been the type who are willing to go to war against the Minnesota Wild in a mid-week home game.
More annoying to play against, absolutely. Domi and Bertuzzi will get plenty of penalty minutes for post-whistle crap and one of them might get themselves suspended for a few games, but that's not actually hard to play against. It's just annoying. Our team threw plenty of hits last year and that didn't really mean squat, because the team still isn't a team, rather a country club for talented hockey players, and prefer to roll over and die at the first chance they get because it's easier that way.
Management has been shuffling the supporting cast for almost a decade now. It's the core, so no, nothing has changed.