There are some guys on the FA market who are better at filling vs the run and not as good vs the pass who will cost less, like Kwiatkoski and Correa. Maybe even Matakevich who is also a teams terror.
Also the Rams have Howard on the roster who the coaches reportedly like. There would be dropoff of course but he moves well and is in that mold of Littleton's role.
In the draft the LBs who can do both tend to go round 1 but we might get lucky since this draft has so many edge types and some other positions that might push them down to our range.
ILB is not a worry for me.