What I have found is the best results for me is to have 1 tgp that has 20-40 categories and have sub sites that pull the specific categories, for example; my teens tgp would pull the teen and petite categories from the main tgp where the other 20-40 categories are listed. This way I don't need to update 10 tgps, only 1 tgp and the rest change with it. This gives me more time for making other things.
