My experience as a consultant is that people don't hire consultants because they want advice. They hire consultants because they want someone to write an official report that agrees with whatever they want to do. If the McMahon group writes a report saying your club should spend $30M on a renovation, it's because the President/Board wants a $30M renovation, not because McMahon wants it. They are not a contractor who gets paid by the size of the job.
After 25 years in the business, I often use consultants for projects because I can often spend $5K to have an actual expert save me $300K.
On the other hand, if your goal is to absolutely piss away money, the quickest way is to do it is to put 10 members in a room and have them call the most expensive club in town for advice. By the end of the call, you will have a $30M renovation on your hands and will need to call the McMahon Group for a report so you can sell it to your membership.