I think getting more speed on the field has been the goal for the last few years. That's why Brad Jones was moved to ILB and it's why Nate Palmer moved to ILB. Those guys are on the more athletic end of the ILB spectrum, what they lack are instincts and vision to put their athleticism to any good use. The great ILBs in this league are fast (most are 4.6/4.7 range), but above all they have to have the instincts and the vision. If you can shed OLinemen and locate the football in a split second then it doesn't matter if you run a 4.4 or a 4.8, you will get there on time. Luke Kuechly isn't great because of his 4.6 speed, he's a natural ILB who lives near the ball. Thinking you can bring in athletes and teach them to play ILB is why we don't have any legit ILBs right now although I have some hope for Ryan.