If I were a Catholic Bishop

, I think I would be very hesitant to establish an EF parish. I would worry that it would begin to create a division of a kind that would be bad for the diocese, kind of us against them. I would worry that those who like the EF would be drained from other parishes. I would worry that it would mean that people in other parishes would have less chance to be exposed to the EF. I would worry that those concerned about liturgy might be less present at the OF. I would not be happy that the EF would not be part of the life, if even to a small extent, of every Latin Catholic parish.
Look what has happened in my church. We have two liturgies, and they may well end up becoming two separate churches. If Latin Catholicism really wants to maintain these two liturgies as active parts of a unified rite, then I think separate parishes are a bad idea.