People keep posting about a reunion as something in the future. Keep in mind Pope Benedict did help develop the process of reunion which is already in place. Individual clergy, ****when ********they ********are ****ready, do in fact come in each year. Some enter the FSSP, or other arrangement where they continue their priesthood, after meeting with their bishop-ordinary. Some laity who were attached to the SSPX each year choose to become active in a parish and their diocese - but only when their own family, itself, feels ready. It seems insulting to ignore the genuine accomplishments (not just “groundwork”) already achieved.
I think Pope Benedict foresaw that the SSPX is less unified, less defineable as time goes on. There are multiple resistance movements at odds with the leadership, who claim to be the true SSPX. It’s not like 1988, when most SSPX clergy, including seminary teachers, had worked years in a diocese, in the Church itself. Today most clergy have never worked in the Church itself, get trained by people who never worked in the Church itself. The SSPX has its ****own ****Tradition(s) now, along with multiplying dissenters against Bishop Fellay.
That’s why Pope Benedict’s personal option plan - “come in when you are ready” - is the only prudent one. The Vatican can assist that by expanding the availability of the EF, and eliminating abuses based on false interpretations of Vatican II.