I don't think they are dropping the BRCA. They may be dropping the BRCA's rules as a guide for their series. (I wait to be corrected)
As far as dropping the BRCA, a region would not participate in a BRCA sanctioned event, ie BRCA regionals.
The East of England, a struggling region is seriously considering this. The EoE regional AGM, in the next couple of weeks, should be very interesting.
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