There are a few parts that come from the 1979 BCP, but if you really research these parts are also in the OF Mass, which is to my belief where the 1979 BCP took them from when they revised the 1928 BCP.
The Canon is from the Sarum Use/Roman Rite (EF). It is a combination of the 1928 BCP, which has all the Anglican prayers, i.e. Confession, Prayer of Humble Access and the Prayer of Thanksgiving. The BDW is a mixture yes from several liturgies, but in a straight BCP liturgy which was used in my low church as a youth there are many differences in the traditions followed.
In Anglo Catholic parishes there is much crossing of yourself, bowing your head, genuflecting etc. Also in these parishes they have the reserved Sacrament in a Tabernacle.
I haven’t been in any Episcopal church except for years ago and it was an Anglo Catholic parish. We used the Anglican Missal.
At the Anglican Use parishes they have done a wonderful job with what they were given by Rome.
When the new revised BDW or whatever it will be called is published I pray that at least some of the Anglican Use priests are on the committee to advise. They have wanted changes from the beginning, but are faithful Catholics and submit to Rome.
This is where the Anglicans coming into the Church will have to be humble and accept the final decision of the Church. As Fr. Mark mentioned everyone has there own ideas on what they want, but as Catholics they will have to abide by the authority of the Church.
If anyone visits the Anglo Catholic website please remember that just as on CAF among Catholics, some complain about how the OF is celebrated, you will find some posters who also complain about it. It is a good website for Anglicans to voice their opinions and most do this with charity. This is a difficult time for them as they are still waiting to hear when the Ordinariates will be established and where there will be parishes erected.
Yours in the Hearts of Jesus and Mary