The best Papers for Lith also had cadmium in them after the cadmium ban by the EU a lot of great lith papers merely became good Lith paper. We're talking image tone and to some extent quality of grain. Also some people believe that cadmium was a better emulsion preserver than what is now in use.
I wouldn't throw away the cadmium some of the best paints were also cadmium based and the lack of cadmium (yellow, red,...) resulted in a severe loss of quality at least according to some painters and conservators I know. Same applies to lead white which is vastly superior to other white pigments but again contains an evil ingredient lead. I wonder if lead bromide was used in emulsions as well