The Blues want to play strong along the walls. They can still do that. Size isn't everything, but when healthy the Blues have ample wingspan pn defense with Parayko, Mikkola, Bortuzzo and Scandella. Dunn can play physical hockey, as can Faulk. Perhaps the one issue there is Krug logging so much defensive zone time --- but his plus-10 rating speaks to his strong even-strength play.
When healthy, the Blues have physical forwards with Schenn, Tarasenko, Sanford, Sundqvist, Barbashev, Clifford, Blais and MacEachern. O'Reilly, Perron and Schwartz are all aggressive on the forecheck.
Obviously the big issue now is inijuries. Earlier the issue was some disconnect with the new blend of players.
If you look at the last few games, the Blues racked up all sorts of hits. Poor puck decisions, a sputtering power play and the general offensive inconsistency have been the big issues this season.
The Blues can still play like the Bluues with this group.