I remember there was a character in our hall in the early 1970's who was one of these older brothers who was zealous in the ministry but never seemed to qualify as a MS or Elder. An outspoken type who didn't sit well with the cliques and P.O. and his cronies.
One reason I believe was that he said (in the early 70's) "don't serve to a date brothers and sisters - this generation could go on 70 or 80 years from 1914 so we may need to run the race like a marathon until 1984 or 1994."
We all thought he was bordering on apostasy or at least completely out of line with the (then) current thinking.
He is of course dead and gone - died in the late 1980's as part of the generation that did indeed pass away.