General manager John Schneider isn't saying the Seahawks are done searching, but all signs point to the draft if they were to make some kind of drastic improvement.
"We're going to be continuing to tinker our way through free agency here a little bit with the offensive line," Schneider recently told KSPN-AM, "and obviously the draft."
The problem is, Seattle might just be getting to a logical point in its franchise development to work on growing new pro-caliber starters. Glowinski was a fourth-round pick in last year's draft out of West Virginia. Justin Britt, another presumptive starter at guard, was a second-round pick in 2014. Gilliam is 25 and has already started 16 games in a season. Bradley Sowell is 26 and eager to compete for a left tackle spot.
The Seahawks are picking four times in the top 100 in this year's draft, but are there premium Day 1 starters out there?
"It looks like it," Schneider said when asked if the draft lines up with his needs up front. "Every draft is different. There's just different shelves of players all the way through the draft. This year, there doesn't really seem to be as many drop offs, if you will, on the offensive line. It looks like a good group."
Guards and tackles in particular are taking longer than ever to develop. It's rare, but not impossible to find someone physically and mentally prepared for the rigors of a 16-game season right out of college. The last few offensive linemen picked in the top 10 -- Ereck Flowers (Giants), Eric Fisher (Chiefs), Luke Joeckel (Jaguars), Chance Warmack (Titans), Jonathan Cooper (Cardinals, now Patriots), Greg Robinson (Rams) and Jake Matthews (Falcons) -- have all struggled. Some are just now starting to hit their stride.
So will Seattle stun us all with an upgrade? Or would they just be throwing more picks at a problem they'll inevitably have anyway? The Seahawks have one of the three best offensive line coaches in football -- Tom Cable. Sometimes, you just need to trust that your coaches can coach.