The new people that will join you will not desire to convert to true Tradition. They will come to you because the legal obstacles have been removed, and not for reasons of faith. They will be very sympathetic, but they will not be seeking the whole truth with the doctrinal conviction that leads souls to martyrdom;
I remember in the early 2000s when I noticed that the sspx was accepting a large number of novus ordo "converts" (this was before the motu proprio of 2008, mind you). The problem was that the sspx was not educating these people on how to be traditional. They would continue to dress casually and they were bouncing from the sspx to the novus ordo, depending on the week. The point is, the sspx was not trying to convert them, but just inviting them to come anytime they wanted. I knew this would eventually cause a problem because it would water down the Faith for others.
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Well, now it's 2019 and we have the perfect analogy for what the sspx allowed to happen back then. It's the same thing the elites are doing to europe/US - allow a bunch of non-europe migrants into the country and what do you get after a few years? A totally changed culture; a loss of the former culture. The sspx lost its Traditionalism (this is one of many reasons) because they allowed all sorts of non-Trads into their churches, without any proper integration. Their Trad culture is now dead.
