Overall a greater cooling off and corporate homegenization stamping out any individuality
One of the things you see is how socially there is less happening in the congregation than decades ago. There have been years of crackdowns on congregation gatherings -- now even getting together to study is discouraged. Picnics, parties, sports -- diminishing. Even getting rid of the home bookstudy (with the obligatory "goodie" nights).
Talks are all getting homogenized. More emphasis on sticking to the outline. In the late 70's into the 80's you might have sketches on the TMS school, slides for public talks, etc. Everything is extremely scripted with little variance.
The literatue is dumbed down. There is no longer a focus on defending the core doctrines in the Bible study books as these are pushed off to appendixes in the back. If your Bible student will just accept 1914 -- why take the time to explain it to them? Similiarly ---
When new light is presented there is less emphasis on "selling it" to the rank and file -- it is more take it or hit the road.
The "meaty" books on Bible prophets are gone and replaced by lighter books about what does Zechariah have to say about Christian dress and grooming.
The Faithful & Discreet Slave is further elevated and glorified and more closely positioned with the Governing Body then the scattered "annointed ones".
The overall zeal of the Witnesses are diminishing if not their belief that is the truth. They pay lip service to their beliefs but do not put their money where their mouth is in terms of donations or field service or future plans. (This is the weird anonomly where sometimes the most vocal defenders of "the Truth" are those that are low in field service hours or falling short in some other area.)