ILB, while not in great hands for the Packers right now, is probably the defensive position that is easiest to work around for a defense.
It's not that easy of a work around but it is more often than not required around the league. The reality is that quality 3-down ILBs are very hard to find. Finding a guy who can hit, shed blocks, has speed and range, can cover, has solid instincts, and the football intelligence to call the signals and adjustments is a rare commodity. There are a fair number of top drawer players at all other positions who cycle in and out and and back into the Pro Bowl and All Pro ranks from one year to the next, but the ILB ranks tend to be domininated by a small number of players in each generation. If the Brady-Rodgers-Brees triumveate are the dominant QBs for the last decade, consider Lewis-Urlacher-Willis-Bowman-Wagner-Keuchly dominating the position of the last two decades. Maybe Mosely is the leading edge of the next small group.
I think Minnesota demonstrates well the workaround if you can manage it. Kendricks is not a spectacular ILB, but he is a 3-down ILB in a 4-3 defense working a 97% snap count last season. He brings some physical shortcomings but he brings intangibles. He's solid. You can take that and field a top drawer defense if the other pieces are there. In fact, that's pretty much required unless you happen to draft one of those top drawer ILBs that come around once every few years.
Hawk was that reliable guy in 2010, the decline began in 2011, and it got worse from there. Martinez might be that reliable guy. But do you have the other pieces? Not yet I don't believe.