I think our depth players haven't been just inadequate, they've been downright detrimental to the team. Almost all of the instances of this team getting caved in defensively are at the hands of Watson, Kelly, Joseph, Motte, Brassard, Zaitsev (has been better since his trip to Belleville), Holden, Kastelic, Brannstrom and company.
Maybe some of those players have better performances in them but have been limited by the true dead weight on this roster? That's kind of hard to quantify in a vacuum, I guess.
Especially this team's 4th line though, total momentum killer. I don't know where to find the stat, but I'm willing to wager they've been responsible for many of the longest shifts we've seen where the team has been hemmed in their own zone for 90+ seconds.
Pushing Pinto down when Norris and Stutzle are back should help. Joseph and Formenton pushing guys like Kelly and Watson out of the lineup would also help. All that to say, I don't know if alot of this is structure related or simply bad personnel performing poorly and that sticking out to us.