I'm sure it has value if you use it every month but AS is counting on you to not get a chance to use it at some point during the 12 months of subscription. AS is not in the business of losing money on every flight so it has calculated that many subscribers will not be able to use some of their credits to make this service work. Given the pure volume of flying FT members fly, FT members are not AS intended subscribers. It's like buffets, it doesn't work if every customer eats their weight, it only works if small eaters are lining up as well.