I don't know that I see this as a big deal either way. Would have been nice to have something shiny and new, but without defensive lineman it's hard to imagine any new defensive coordinator, installing yet another new defense, would be the solution. There's no question the defensive line was a joke and the injuries hurt last year, but there's also no question there are issues with the overall defense. I am not a fan of shuttling in 40 different players every couple of series. There are definitely issues with players not knowing their assignments and frequently occurring breakdowns at inopportune times.
Al and crew need to get some new bodies who can help right away, develop the **** out of the talent that's on the roster, and also tweak their scheme/implementation to at minimum get everyone the same page better for next season. Great defensive lineman are most definitely scarce, but in year 3 there's no excuse to not having enough division 1 level players to form an average rotation.