I wonder if the slower decline of JWs is due, in part, to the door-to-door work they did for so long. That's a level of dedication that people cannot help but notice. Sure, many people notice it when they are being bothered on a weekend morning or accosted on the street, but at least some people will admit that it takes some dedication and a bit of brass to keep doing it, especially in places that aren't all that nice to walk around in.
Could the recent changes lead to less activity in the field? And can this lead to a short-term increase, as people notice that JWs are not going door-to-door as zealously*, followed by a period of decline as they begin to fade into the background of public perception?
* In other words, the cessation of the door-to-door work might be seen as a sign of the end.