Area South of the Bay is not 30A, it is South Walton - millions have gone into branding "South Walton" - not 30A. 30A is a road (and a brand by a "carpetbagger"). Walton County extends well past Sandestin into Miramar Beach. Which many people think is Destin.
It'd be interesting to do a poll and see if folks in Miramar Beach would rather be part of Destin or a new SoWal city. Sandestin wants to be left alone and not be taxed any more.
Mack Bayou to Inlet Beach makes sense as a community.
Actually, I would not prefer it. I own property north of 98 and would prefer to be left alone. I own in an area that is starting to be encroached upon as a industrial area and I can see those south of 98 may not want that kind of business in their neck of the woods.