Also, the ESP on the Pi (with ESPimaticRF in homeduino) can still send/receive with local RF hardware.
You could attach the ESP to the Pi, connect the local RF hardware and install one ESPimaticRF node somewhere in the attic where that one RF device is slightly out of RF coverage.
Next step for ESPimatic for now is to implement all the (sending) protocol definitions. This is used to analyze the RF command coming from pimatic, so the network knows the protocol/unit/id, which is used for the black/whitelisting.