The problem with 9 rider teams is the riders from smaller nations really have no cards to play. really if you come from a smaller nation and only have 3 riders there is not much you can do against the bigger nations. it becomes a wait and hope that one of the big nations race to a strategy that suits you. so I think by reducing the team sizes it gives the smaller teams a chance to make more impact on the race without completely disadvantaging the big nations who deserve to have the extra riders.