Call me cynical but, Bishop Fellay is a smart man and he knows that Rome seeks after lost sheep and in doing so she uses diplomatic language. She doesn't lie but she is very complimentary and avoids polemics. It doesn't take long for the kind words used by Rome to make their way into the public arena where they are used by SSPX devotees and their supporters to "prove" the sspx (and by extension, Lefebvre) were never schismatic and Bishop Fellay appears as more formidable if any internal SSPX power struggle between he and Williamson is occuring.
A cyncial man might look at the entire "rapproachment" from the SSPX side as an exercise in duplicity. They fool many into thinking an actual reunion will occur.I hope they do quit their schism but I agree with sinkspur that few Bishops desire their presence in their Jurisdiction - for many reasons.
I think many Latin Mass lovers - both the FSSP, ICK and the SSPX think "the past is the present" but they are wrong. I suppose there were certain groups about when Pope Siricius changed the Greek Mass into the Latin vernacular and perhaps they were lamenting the death of the Mass of all ages back then and claiming that Pope Hyacinth was rolling over in his grave but I never heard of them splitting off and forming the Societ of Pope Hyacinth in opposition to the living Pope Siricius and codeming him for messing around with the Mass as sudden changes in the Mass are deadly etc etc