Seattle has fielded poor OLs for a decade. It'd be great to be better there, but we know there are ways to mitigate. LB is also an area where other positions can somewhat cover. Man coverage deep on both sides being a high percentage play for opposing offenses is an Achilles heel with no answer. If injuries return, maybe it's less important. However, in the meantime, it's the target for every 3rd down, every series, every game.... If JS stands pat, I have to believe he sees a quick return of starters and 1st backups.