I've lived in Boca Raton (BCT), FL since 1980 and the area has grown tremendously. I know MIA, FLL, PBI are all within an hour, but I am positive that BCT would be able to handle a B1900, DH8 or even a CRJ given the runway here. How does a city or airport go about getting airline service - especially when it is basically a reliever airport. I am positive that the growing population (near 100,000) would welcome even commuter service to the Bahamas, MCO, TPA, etc.
Los Angeles has ONT, SNA, BUR, LAX and LGB - obviously BCT is nowhere near capable of that type of expansion - but prop service or RJ service would be feasible.