When any Orthodox fully initiated in an Orthodox church elects of his or her own volition to worship in a Catholic church, of course their first choice is usually to continue to practice that sacramental continuity as an Eastern Catholic and by all means if that is what is best for the soul (which of course, is the highest “law”), then that is precisely what should be done.
I agree completely, and said nothing different.
It is absolutely nonsensical to tell someone “yes, you can go to this church, but first you have to wait until some superfluous paperwork is generated which may take months to years to get a rescript before you can really join this church” when that person is fully initiated and participating in a similar liturgical and sacramental tradition.
I’m not advocating anything other than that OP should if s/he chooses to return to the Catholic Church, participate in an EC parish. I simply said that having been baptized in the Latin Church, and the Catholic Church not recognizing “re-baptism”, * from my experience with Canon Law CIC and CCEO*
it seems inconsistent that s/he would be inscribed into an EC Church
sui iuris. I am only going by what is my experience with the canons of the Church, many of which I don’t like, and what has come up here with various scenarios.
If you are correct that Canon Law allows for immediate enrollment in an EC Church
sui iuris of a person baptized in the Latin Church, who has lived fully as Orthodox, then returns to the Catholic Church of their baptism I’d be* thrilled* to learn that.
As far as changing Churches
sui iuris my change from Latin to Russian Greek Catholic took almost no time, a letter from my EC priest, a letter from the Bishop whose Church
sui iuris I was leaving and a letter from the Bishop whose Church
sui iuris I was entering, and a letter sent to the parish where I came into the Latin Church so my new status could be recorded on my Confirmation certificate (for a Baptized Catholic, on the baptismal record). There was definitely no foot dragging from either bishop.
Transfers from an EC Church to the Latin Church are quite another story since that change, leaving the East, is much discouraged.
Until recently by far the majority of people in my EC parish who are there every week and constitute the parish are in fact Latin Catholics, and have never chosen to change their Church
sui iuris. There is certainly no difference in the status of people in the parish. Recently we’ve had a number of young cradle Byzantine and Orthodox begin to come on a regular basis

so the % is shifting a little, but still isn’t even 50/50 I think.