Theo:
The Ordinate for Anglicans is a Papal directive whereby “Groups of Anglicans: can come into Communion with the Catholic Church and preserve the Anglican patrimony, i.e. its Liturgical Tradition within the Catholic Church. These Anglicans are the products of the Tractarians and OxFord Movement of the 19th century and are part of the more Catholic minded wing of the Church of England. There prayer book, as AnAmericanMother noted, is the product of Thomas Crammer’s beautifully translated English, albeit his translation was doctrinally unsound and inconsistent with both Catholic and Eastern Orthodox Tradition with respect to the Eucharist, Latin from the ole Sarum Rite of the Catholic Church, which was the form of the Roman Rite celebrated in England before the Council of Trent [1534 to 1563]
As for Rites, please read the link below. The Anglican Ordinariate will be basically a Rite within the Latin-Church similar to the Roman [the largest of the Latin-Rite Liturgies], Ambrosian, Mozarabic, and Bregian Rites.
http://www.ewtn.com/expert/answers/catholic_rites_and_churches.htm
Of course, Edward VI and his bigoted advisers insisted on radical changes to the words of Consecration and other particular parts of the Mass to which they objected. It's fairly easy to tease them out and replace them with an accurate translation of the original Latin.
The problem with the Anglican Use Rite as currently constituted is that the part that was changed back sticks out like a sore thumb, since it's based on the current rather awful ICLE translation.
What we really need is for somebody to go back to the Sarum Rite -- maybe a small committee, including an accomplished Latinist and a scholar of 17th century English as well as a good solid prose stylist or two -- and re-translate the problematic bits into a style as closely approaching Cranmer's elegant periods as possible.
(I would be happy to volunteer for proofreading, collating, and any other necessary dogsbody work).
Am I correct in thinking that priests must be ordained by a Catholic bishop in respect of Apostolic succession?