I have noticed something for the last couple of years. The lessons appear to me much easier and less meaty (this has been discussed at length). However, something I haven't seen discussed too often is the changes that have occurred in the thinking portion of preparing for the meetings. Meaning there is less thinking required.
For example, the Kingdom Ministry articles that are question and answer. In the past, if you wanted to participate, you had to study fairly diligently because you didn't really know what questions the brother would ask (except for the easy basic ones). Now, the questions are printed at the bottom of the articles - voila! no more thinking - by speaker or audience.
Another example are the questions before and after the circuit assemblies and special assembly days (not including district conventions). We've discussed the upcoming program for years, but now there are actual questions to be reviewed before and after. Either the friends weren't getting the main points or they were forgotten too fast. Now you can take your KM with you to the assembly and note down the answers to the specific questions in print.
These are just a couple of examples. The friends I speak to always say the same thing: "This just makes it easier for us to get the main points - Satan has us soooooo busy; the FDS is trying to make things easier for us". Then they follow that comment with a "but you still have to study as hard as ever or you'll lose your faith".
Just a thought