Yes, I'm going to go make a visit at lunch tomorrow. I'll note my disappointment with the gasket issue, and what I expected would happen (do it right the first time), but I'm not going to press for the corrective work now. As noted, I don't want some angry/annoyed technician tearing into the headliner area just to fix this. I care more about them not introducing more problems on my wife's car than I do about making them correct it.
The brakes are different, though (although, ironically, far more critical to safety!). I've printed a copy of the TSB and will ask about the difference in the part number when I'm there tomorrow. If they balk, I'll just ask them to confirm that they're refusing to install the updated brake pad, the one that Subaru designed to fix the noise we had (and will have again). If it comes to that, I won't get ugly at the dealer, but I will give SoA a call and see what recommendation they have.