As a homer, I'd like to add Brandon Moore to this discussion.
3 starting LBs are quite possibly leaving as FA's (ACarter, DSmith, JPeterson), so Moore is going to be starting next year.
Mike Singletary, LB coach, loves the guy, and has talked about Moore being a big playmaker for next year's squad...especially as a pass rusher.
In the games he started, he averaged about 7pts/game (Zealot scoring), which would put him in the low 30's, right around Kawika Mitchell and Kirk Morrison.
Just my $.02