Interesting question...one that should evoke all kinds of responses....
Myself....as a child during the early-mid 60s, I feared the elders. Elders were not so much shepards as they were Gestapo agents. They were there to make sure rules were obeyed. They were there to "take care of" disobedient ones, rebels and dissenters. Sometime in the mid to late 70s, there seemed to be a shift from the elders being disclipinarians to being more shepard like. They were to lead by example and in teaching but were firm when necessary. They seemed to become more affable and likeable.
Was this because I was growing up and seeing them in a different light or because the patterns changed? Looking back at the publications from the 50s and 60s compared to the mid 70s to the early 80s, I think the WTS started to encourage elders to be approachable and easy to deal with. Rigidness & hardheadedness - out, merciful & caring - in.
Comparing elders from my age group today to some of the old school still left around, I can see a definite change in style and personalities. Old school guys are still somewhat strict and rigid, not willing to compromise a position or be reasoned with. The young guns tend to be looser, easy going, not sweating the details or the little things. Of course these are generalities...I have seen examples of both types in both age groups. The young ones who are strict and rigid are usually worse than the old school guys. It's like they have to prove something or make up for something lacking in their life elsewhere.