The SSPX has experienced tremendous growth during Covid lock down as they refused to shut down their chapels and mandate people to wear masks, all of the things the Novus Ordo parishes were doing at the time. Many of their chapels have doubled in attendance. @Kenjiro M. Yoshimori A really excellent book that gives greater insight into understanding Pope Francis is "The Dictator Pope", I read it last year and it's really good.
Nice idea, brilliant. But in the end, being the evil man he is, I think Francis would side with the deviants and queers and impose the threat of excommunication on the SSPX if they go ahead....which I hope they do....adding at least 6 new young bishops to their swelling ranks.