Ultimately you can't hide them completely, and you're still going to get exposed in certain situations, but you can definitely mitigate it to some effect by creating more negative or no-gain plays and forcing offenses into longer downs and distances, along with limiting the LB's coverage responsibilities a little and subbing them out more so as to avoid situations where they're getting matched up against WRs.
Clearly we still have some serious talent holes, but there's absolutely enough there to field just an average defense, good enough to not get absolutely destroyed and giving us a chance to win.