There is already a precedent for that approach: Married clergy from other denominations can be ordained priests after they convert to Catholicism.
Allowing a similar mercy to married former Catholic clerics would certainly help ease the current priest shortage in the West.2.
f anyone had asked me what I thought about Eastern Orthodoxy before I converted, I would have said it was basically a popeless Catholic Church, except that its priests can marry. While there are certainly important similarities between the theologies of world’s largest and second-largest Christian Churches—for example, our understanding of the nature of Communion—there are also crucial differences that still impede reunification more than a thousand years after the tragedy of the Great Schism.
Moreover, it is a misnomer to say that Orthodox priests can marry. If he wishes to have a family life, he must get hitched before he is ordained to the deaconate, the penultimate step before becoming a priest.
If the priestly celibacy were no longer required, the Catholic Church would likely return to its former practice.
In rare cases, an outsider may join the Amish in order to get married to an Amish person.
Amish do accept converts, though they generally do not proselytize or encourage outsiders to join.
There are several benefits to having married priests.
It allows the men who toil in the trenches of parish life to experience the joy of having a wife and children, which makes the priestly call easier to follow.