I welcome the creation of this thread, particularly as it has been started by an experienced member who it seems is open to the possibility, that maybe a long established concept of design and operation might be improved upon.
However reliable a single component may have proved to be, having blind faith in it can be dangerous. Whether or not failure is likely, any measures that mitigate against it, I feel, should be considered.
Hopefully those who are responsible for designing and operating these systems can evaluate any methods that might be proposed to further increase safety.