I'm not sure if they need to redo the entire OL, but they could probably use a new coach. If I remember correctly, things started going downhill after Cole Popovich left the staff for refusing a COVID vaccination during the 2020 season. They opened the beginning of 2020 very strong at OL, they looked as good as I had seen them in awhile, and following Popovich's departure began declining and haven't recovered since. They look sloppy with their technique, disjointed, disconnected, not particularly accountable. I really doubt Scar wants to come back to full-time coaching, but BB needs to be on the phone with him getting whatever he can get, and working lines with OL coaches elsewhere (perhaps with Scar's input). The unit under Billy Yates hasn't done anything to inspire confidence, and even if Patricia is a better OL coach than Yates (which we do not know at this point), he's wearing the primary OC hat, so I doubt he can be counted on as a full-time OL coach in lieu of Yates.
I also don't love Joe Judge. I know I've said this multiple times before about the guy and at this point I probably sound toxic, but I'll repeat myself because he's the guy I'm the most concerned about from a coaching staff perspective. I just get the sense he's a blowhard, asshat, poor communicator. I know this is the NFL and players shouldn't expect to be coddled, but constant scolding and barking is equally ineffective, too. Good coaches know when to push certain buttons at certain times, when to scold, when to bark, when to uplift, when to crack a joke, levity, seriousness, etc; depends on the player(s) in question, the situation in the game/season, so forth. I say all of this from afar, so I'm essentially just speculating based on my intuition, but I really don't care for Judge. I don't trust him coaching Mac, either; they need to find a bonafide QBs' coach who can repeatedly instill good habits in Mac & Zappe on a daily basis. Judge might be a good guy to knock out basic film prep tasks, padding, gathering basic available data/info to share with superiors (who then analyze the info), but I don't think he's someone with the refinement, polish, and depth to be intimately involved with the coaching of the offense/QBs, or involved with any particularly prominent role coaching role on a high level football team that involves much critical analysis.
Patricia, while I have hesitations about him for various reasons, I have more faith in as someone who's actually competent and capable of doing his job at a relatively high level. I also get the sense he's a bit of an asshat, and maybe not the best communicator either, but despite those personality traits I get the vibe that he's relatively decent at his job, which is obviously a good thing.
We'll see where things stand after the next 17+ games, but suffice to say that at this point in the process of looking forward to 2023, OL is clearly the biggest area needing to be addressed (fortunately there will be ample cap space to address it, if it's still a need 4-6 months from now).