I spent enough time at the very "top" level of both BA and VS Clubs to realise that the parts of the Club you apply to join are nowhere near as comfortable and rewarding as the parts which are not advertised but where you are told you have arrived without asking. They were both well above Gold or whatever it is today. In terms of "loyalty", 10 First (or a few Concorde) or 12 UC trips annually ticked the box.
It was fun while it lasted.
Nowadays, I just look for the cheapest fare, turn my iPod on and keep my head down