First, we should ascertain that there is such a thing as "the BKs". If there is not, then there can be no such thing as break away/ splinter groups.
The collective of individuals called "the BKs" does not exist (OK, it has been stated already, but cannot be stated often enough). What does exist is a collective of individuals who should take responsibility for their actions rather than hide behind the BK label, or have the BK label stuck on them.
The Supreme Soul comes and gives the inheritance to all souls, as individuals, and collectively. The collective is the world spiritual family. All six? billion (and rising?). To see "the BKs" as your spiritual family is narrow minded and short sighted, but OK for so long. God does not see it this way. We are being asked to see things God's way. God sees one world family (my opinion).
So, some BKs may go on to become part of other spiritual paths even, or none and it is OK. The Seed becomes the trunk becomes the branches ... To see the Tree expand and branch should not be seen as negative or failure, the Tree needs to branch to collect light and offer newness and refuge to other living things as well as bear fruits of its own. Or, do we fear change?
Trees are continually changing. It is natural> What about us? I refer to either all six billion, or the individual, there is no in between in real terms.