Bridge FA was and still is hopeful that all the clubs in the low country will join the alliance.
To my knowledge there aren't really any new clubs forming. Yes Bridge FA is a new club, but there are clear and distinct reasons to do so, but would be more suitable for a different topic.
In looking at the Charleston area, there basically are 4 clubs that fielded challenge teams last year, SSC, JIYSC, MPSC, and CUSC. Discussions were undertaken with this entire group. To date, only SSC and JIYSC have joined the alliance. Each of the clubs that have not joined have had their individual reasons for not joining. Bridge FA is still committed to working with each of these clubs to resolve any differences, but as all clubs have shifted to operations, there is little time left for these discussions.
When the Bridge FA concept was developed, the talent pool in the Charleston area was already "diluted". And with no new clubs forming I don't think it's reasonable to assume that it either is or will be more diluted. In fact, in some cases, Bridge FA has been successful in pooling the talent, not all, but some. Only time will tell how successful it has been for it's first year of operations.