I'll probably be pilloried for this, but I don't see anything wrong with a properly designed and executed safety survey. Insurance companies do them all the time. If there are unsafe practices, they should be called out. We have all seen instances of organizations that have done things things successfully over time, creating a culture that accepts marginal practice. That's not to say a ride in a warbird need necessarily meet air transport standards, but a disinterested parties' critical eye isn't always a bad thing.