Perhaps someone could make a fortune by selling the designers of the 787 electrical system a supply of RCCBs and some 13 amp fuses.
Hi JW411, sadly I suspect that they were left off to save weight.The very reason for distributing the electrical system, is to reduce the heavy cables fanning out from a central point. I guess it would also not be too convenient for the flight crew to be digging around in the aft cabin ceiling, during flight, to reset a few breakers.