Power overloads are handled nicely by the power supply I use. If that's what you mean....
The system will have all functions available by BT and nRF(Scorpius protocol).
I don't expect much for car control with Bluetooth for more than 2-4 cars. I expect the dongle will be the weapon of choice.
BLE will be perfect for firmware upgrades and reflashing.
Yes its all part of the master plan to set complete Scorpius Generation II by end of 2021 and it should see us out to the end of the decade ie 2030. By then technology would have given us more tools to go even further.
Connecting app and PC will be tricky because Im already asking the app to receive controller info AND relay this to car AND receive car telemetry.
The RMS will either be the app one or the PC one but not both at once.
Getting app screen to a nearby monitor or PC would be best done on a separate unmanned smart phone that is dedicated to simply receiving car telemetry and passing it on to the PC. Each would need the dongle.
The map has an error or two. But you get the idea. App to PC for example would be via dongle not direct to PC as drawn.