It's often occurred to me that had we kept BS546, the 5A outlets could have been conveniently wired on 10A radial circuits. The IEE Regs. actually allowed them to be on a branch rated up to 15A maximum.
Perhaps we could have standardized on a variation of the design which incorporated an extra pair of holes to take 2-pin 5A plugs as well, such as was found on some adapters, then equipment not requiring a ground could have still been fitted withe the more compact 2-pin plugs. With careful design, the Continental plug would also have been catered for, as with the design on the typical Euro/British socket on shaver outlets.
The French/Danish/Schuko compatibility would have been a problem though.
