I agree this issue needs to be addressed individually to AOA by submitting a complaint via NHTSA or taking a legal action against them (lemon law) or etc.
but I disagree that a group effort won't be effective.
personally, I'd like to pressure AOA in every way possible to let us know if they have found the cause and the fix for the issue.
30+ owners should be a concern to Audi simply because it'll cost them a lotta money in making an attempt, or more, to fix the issue.