Although one of the aims of this exercise is to reduce the number of categories, I feel it is asking a lot of temporary off peak members of under, say, 30, to pay the full membership joining fee when their turn to become full members comes up. Unless they are in finance, it is most unlikely they will be able to pay this lump sum themselves. It then falls on the parents to do it for them. If you have a number of children, this is a large amount of money. In addition, with increasing job mobility, these young adults may not be sure whether they want to become a member of the Club until they reach that sort of age.
Additionally, although this may also be a money raising exercise, I feel they should have a reduced annual fee until they are 30, for the same reasons.