Well, kind of.
If you're talking about hits that directly influence the flow of play, then yes, absolutely. Separating someone from the puck is something our defenders seem to struggle with, that's for sure.
If you're talking about the grinder type hits where they finish a check on a guy who passed the puck already and the play is already gone... ehhhhhh. Don't really see the use for those types of plays unless you subscribe to the "wear them down" train of thought.
Over a seven game playoff series those "wear them down" plays do just that. It's less so during the regular season where just having bigger bodies helps mitigate some wear and team, imo. If you have guys who are willing and able to deliver a hit and separate players from pucks and change the flow of play, I think you also have guys who will typically go in and finish their checks and wear on teams in general. Maybe not 100% of them, but the lion's share.
You can make this team as tough as you want, it ain't gunna make us into a cup contender. What this team needs first and foremost is a serious infusion of talent.
When we're in a position to start making deep playoff runs again, then is the time to start asking "is this team tough enough?"
You're still saying the team needs to be tougher. I think the talent part is going to have to come largely through the draft. We've shown very little to no ability at getting big talent guys through free agency or trades. Which means we're waiting on it. Every summer, though, there are some high physical play guys who might get overpaid a bit (Matt Martin, for example, was probably a little overpaid unless he assumes a larger role in Toronto) but they are at least available.
Right now we don't have enough talent or enough toughness, so getting markedly better in at least one of those areas would be an improvement.