You know, the good Christians in that sect --- and they are there --- just need to come out of it and come into the Catholic Church. Many of them even use the term "Catholic" to describe themselves.
And I know some people on this list don't find this agreeable, but there is an ordinariate in the Church created just for them. So in some sense of the word, they don't even have to quit being "Anglican". A win-win all the way around.