Genghis, I think that such a book would probably find a market, but would try to interest a publisher before writing it. If you would like a contributor for a dull legal chapter, I'm always willing to be dull.
IO, my point about the cow with the achy head was that the aircraft owner's liability to people on the ground is strict (not so liability to passengers, which is based on fault), and a company insulates the individual from this strict liability. Granted, if all goes horribly wrong and the insurance doesn't pay or is inadequate, the company may have to be liquidated and the aircraft sold, but it is better to sell your aircraft than to have to sell your wife and kids (arguably).
A director or member of a company would in general have no liability for the careless flying of another group member. If an accident could be proven to have stemmed from a group decision not to fix that big hole in the fuel tank, then liability might be shared. The important point is that liability does not arise merely from one's status as a director or shareholder.