Not very often though.
Physicality is a way of defending the net, and getting penalties. What difference does it make whether a d-man pokechecks or hits the guy, if he's taken off the puck? They lose their structure if they step up on the shooter too often.
The Lightning have also tended to draw the scorn of league officials anytime they get proactive. Ohlund being a prime example of some BS penalties called.
Players like Bergeron, clark and Lundin left alot to be desired in front of the net last yr. Kubina and Ohlund have seen better days at the physical end and Hedman never was a physical player. Brewer is the only one that has a presence in front of our net on a consistent basis. For the majority of teams this poses no big deal but with teams like the Bruins, Pitt, Philly and Wash that like to crash the net. We struggle against that style. And when we collapse, our forwards are not physically agressive enough that the opposing team pays the price per se.
All of which are very good teams, but I don't see your point.
Washington got swept, and we came within one goal of putting the Bruins away.
We did not meet the Flyers in the playoffs, but the season series between the two was:
TB 3-2
TB 8-7
TB 4-0
PHI 4-3(SO)
so I don't see a particular problem against them either. I think our defense (overall) is physical enough.
On your point about our forwards not being overly aggro, if they're not, what is left for the defensemen to do once they're beaten, other than to block the shot or pass? As I said, if our D step up on the guy, they leave their spot open for quick passing if they don't manage to take possession.