dear john and anyone interested,
in the chronic diseases, p135 of the jain edition, hahnemann wrote that

'the latest symptoms that have been added to a chronic disease which has been left to itself ...are always the first to yield in an antipsoric treatment; but the oldest ailments and those which have been most constant and unchanged , among which are the constant local ailments, are the last to give way...'

the red herring's law is more than an 'extension' of that.

there is nothing in the chronic diseases nor the organon about discovering which is the 'deepest' part of the case. and footnote to organon par 1 is apt.

hahnemann knew the remedies well and yet never, to my knowledge, commented that the mental symptoms were to be thematically tied to the physicals, as is the tendency of modern practitioners. i believe this is because it introduces an unneccessary level of interpretation between proving data and the case at hand.

all the schools think they are superior, and all practitioners, due to the nature of homoeopathy, have some splendid results.
each time a new method comes up, it needs to be measured against the method of hahnemann.
it sounds to me as if what herscu is doing is a lot nearer to that than 95% of practitioners, including most of the other famous ones, but still, it appears that his method introduces unnecessary material.
if you obtain a copy of boenninghausen's characteristics materia medica [inexpensive] you will probably find that herscu takes a lot of his most practical material from that, judging by the examples you gave of remedy 'segments.'
to be at the cutting edge, you need to be conversant in german it's true.