What about a receptacle for a hot water recirculation pump? It you install one of these after market it either needs to be installed at sink location furthest from the hot water heater or at the HWH with a thermal crossover valve at the remote location which is more expensive. If you pulled from the existing GFCI down to the under cabinet location and either hard wired the pump or used someting like a 7-15 configuration receptacle to keep Jo-blow from plugging in, do you think the AHJ would pass it?