One of the few things the French were actually very smart at. They standardized on a single design licensed from Westinghouse and carefully made a whole bunch of improvements common to all plants so 1) safety is very high and 2) a person trained to operate the systems of one plant can operate all the plants in the same country. I wouldn't be surprised that if we start building nuclear plants in the USA again it will be of a standardized design based on highly safe nuclear technologies such as pebble-bed reactors, which are just about meltdown-proof.
Either that, or standardize on the design that the nuke navy uses. I agree that it is vitally important that there be a standard, and that it be a good and proven standard