We might be arguing the same thing, I can't tell. From what I see, the pooling of So CAL teams starts in earnest in 14/16... Elsewhere, it seems, the pooling of Premier (PGF chasing teams, TN Mojo, et all) start in 10's and 12's. The example I gave of my DD's team, only 2 girls are from outside of 40mi area on a roster of 17.
I would have to agree with this. The 14u team my DD is on is all girls from within 30 miles of where the team practices at. Last year in Colorado I spoke to parents from opposing teams where all the girls weren't even from the same state let alone 30 miles. Same with who they played at PGF, one team had girls from 4 different states and were shocked that our girls could "practically ride their bikes to each others house"