I agree with that idea (if a last chance solution to prevent local interference by the bishop). But that sounds too much like the "national" parishes of day's gone by, where certain ethnic groups went to certain parishes (ie. in my mom's neighborhood, Poles and Lithuanians went to the Annuciation, Italians and Irish usually went to Our Lady of Mt. Carmel.
As for cultural vs. religious problems then yes, because there wasn't as much of an open door to discuss things in the Church prior to Vatican II. Although i would argue that VCII also caused many to lose their compass. They didn't even come out until 8-10 years ago.. Prior to that, even if it were serious, bringing forth allegations against your priest were just simpy unthinkable for most.
You have to remember that all of these cardinals are men of Vatican II. They celebrate the Novus Ordo in their dioceses, and see even the allowance for the Tridentine Mass as a kind of promotion of it, which they will never do.
I think many more bishops would be open to Tridentine Masses if those who wanted them were more diplomatic in asking for them. Often, they march into the bishops' office, in a confrontational manner, and wave Ecclesia Dei in the bishop's face.
The traditionalists we have here on FR are, by and large, such people: angry, demanding and uncompromising.
I'd like to see the traditionalists accommodated, but this kind of stuff does not help.