So while reports have surfaced that Kubiak and Co. like some of the returners on the line - and really, what's not to like about a healthy Kolton Miller, a healthy Jackson Powers-Johnson and the flashes shown by Caleb Rogers as a rookie? - new O-line coach Rick Dennison has to answer several self-scout questions first.
Queries around, yes, scheme, fit and desire.
Is JPJ a center or a guard? And that answer should determine where the Raiders go hunting in free agency. Because Tyler Linderbaum, a three-time Pro Bowler for the Ravens, is the crown jewel of centers in the free agent class. Linderbaum, 25, has yet to miss a game (though was inactive for two) in his four-year career and will be paid handsomely by someone for his services.
Also, the entire Browns offensive line is hitting free agency, and eight-year veteran right guard Wyatt Teller, a three-time Pro Bowler, could be a fit.
As the [NFL Network’s Chris Rose said](https://www.youtube.com/watch?v=4Qu5-pnhG9U), "Teller is maybe the one guy you would want to look at."
Rose has added context and perspective, given he does play-by-play for the Browns preseason telecasts.
"I would say that Wyatt Teller is the one guy who still might make sense," Rose added. "He has been up and down, production-wise, but I would say that he's probably better than what the Silver and Black have offered the last couple of years."
[Gregg Rosenthal of the NFL Daily Podcast](https://www.youtube.com/watch?v=CO_lP1ELoP0) had an intriguing idea for the Raiders – sign the Bills' interior O-line of center Connor McGovern and left guard David Edwards in free agency.
"They played next to each other, they communicated really well, they're rock-solid starters," Rosenthal said. "You're definitely the only team, I think, with enough cap space and the need to just make it happen. With one-stop shopping, you solve a couple of positions there."
Sign two plug-and-play veterans on the O-line in free agency to add to the likes of Miller, Powers-Johnson, Rogers, DJ Glaze and Charles Grant, and maybe add one or two more such grunts in the draft and let Dennison get to work.
It all starts up front. Nothing else matters if the QB, a No. 1 overall pick or a grizzled vet, can't be protected, or a running back can't even get started.
That's the map the Raiders should be following on this specific offseason cruise, right?