If they come into full communion with Rome, why would they not have a catholic mind, regarding the seven sacraments, how else would they be in communion? Also ordinaries for separate EX protestants in communion with Rome and with a catholic mind, like ALL converts, who wish to retain their patrimony
You are asking about the establishment of ordinariates, beyond the Anglican Use ordinariate, for other of the reformed traditions.
For an ordinariate to be erected, there has to be a group of the faithful converting to Catholicism, as a body, both clergy and laity, with a liturgical use that is their proper heritage but that is adaptable to Catholicism.
Moreover, their ecclesiology must be constituted such as to be normative to have a bishop as the Ordinary for the ordinariate. There must be the patrimony of the ministration of the seven sacraments to the lay faithful who are coming from that tradition, and it must be according to a Catholic mind of the sacraments and their nature and their administration.
All of that has been true with the Anglican Use. What they lived was compatible with the Catholic mind and so they have a missal with their own form of Mass, which preserves elements from the celebration of the Eucharist according to the book of common prayer; their own Divine Office, which is entirely based on the Anglican Office and not the Roman Office; their own rites for administration of baptism, marriage, the reconciliation of a penitent, unction of the sick, burial of the dead, etc…all of which legitimately preserves their liturgical patrimony as Anglicans but which are rendered for usage as Catholics in ways that are solidly and assuredly Catholic in theology and praxis.
What was provisional has been finalized with the work of the commission of the CDF, on-going now for years…and the one who oversaw that tremendous work is now appointed bishop for the Ordinariate of the Chair of Saint Peter, which is the ordinariate governing the Anglican Use for the United States and Canada.
There are relatively few groups besides the Anglicans who are capable of that. There are elements of Presbyterianism, as but one example, which do not lend themselves to the ordinariate mechanism in all its aspects, even should there be an en masse request of Presbyterian ministers and faithful to be received corporately into full communion with Rome.
Yes, they could be received into full communion with the Catholic Church by a different process but the establishment of an ordinariate would require too much violence to their liturgical praxis and theology as also their ecclesiology to really make it feasible. That is what I was saying in my post.