Ok. I forgot about Microdol-X. They did use salt in that developer, but they have stopped using salt in developers because of the problems it may lead to.
75g/L sulfite is a better grain solvent without the problems salt may give.
It may be futile to talk about this since salt seems to be the ultimate stuff to use in B&W chemistry. It is a grain reducer, a fixer and a fog reducer. It's strange that nobody has used as a developing agent yet.