As far as the beach area goes where I live, there could be considerable improvement. There are also bars/restaurants collapsing there like the abortion that was Rocky's Aqua. The beaches I go to range from Calleton, Magante, Rogelio, Congrejo, and Friday the first time at Playa Teco. I hope to add Sosua to that group in a year, but time will tell on that. Some people seem to be obsessed with Sosua.
I don't expect anything to be "ready" in Sosua for about a year. Meanwhile, aside from construction noise, the current vendors not actually displaced by the new plazas being built can remain, allegedly. Don't you love the incessant banging of hammers when concrete work is done? Sosua beach is not being destroyed, just the decrepit structures there will be destroyed. They make it most unpleasant now.