I dont really understand why SS is such a strong need. Glen Earl seemed to be playing very solid. If it is for run stopping, then I think a good Dlineman would have more impact than another SS.
Walker is not doing so well.. Payne is great, but old.. both positions could use a talented young player. Honestly Robaire Smith is the only player on our Dline who I think is set in stone. Payne is great, and could probably be our DT for another season or two.. or at least until next year when we can get Ngata (who i agree, if he declares would be a GREAT grab) but we need someone to take the starting spot over Walker. Walker would be fine as a backup, someone we could throw in to spell others, but I dont think he is good enough to be the starter anymore.. at least not judging by his play this year.