Of course!
I think there are enough good reasons to use the ESP32 for a power node. I have decided to use the Nordic Core in order to have a uniform platform for all product variants. Since the nRF5340 seems to burn less power than the ESP32, I thought Nordic was a better choice for power sensitive applications.
Since a power node requires significantly more energy due to the higher RF output power, the 10-20 mA difference between nRF and ESP is certainly not that significant.
The central idea of the power node is the use of directional antennas. Using the eCompass and the GPS based location, each antenna can be assigned an azimuth, independent of the installation of the power node. When two power nodes exchange this information, they know which of the antennas to use to communicate with each other.
If there is enough interest in such a solution, there is a good chance that this idea will also find its way into Meshtastic firmware.
So suggestions for changes to the hardware design are always welcome! 