I agree with sbiddle on this. Certainly nothing wrong with NZ selling the Koru memberships. The main problem is that the lounges are overcrowded. If NZ are going to have so many "premium" passengers, then they need to expand the lounge capacity accordingly. It is particularly annoying when you pay a very high price for a business class ticket, and the lounges are so overcrowded that you can neither work or relax, and end up leaving. The best answer would be separate business class lounges or elite lounges in selected locations.