I don't hope JWs collapse. What I hope for is that they stop shunning and concentrate on positive aspects of their heritage that people can be proud of.
In terms of growth or decline I am just interested in interesting developments. Until recently I probably had a more positive view of JW growth than many. I think they have done amazingly well to grow as much and as fast as they have. They are much more successful than the Mormons for example. They have been around 50 years less than the Mormons and yet have about twice as many active members. Plus JWs are much more evenly spread across the globe than Mormons.
Watchtower was one of the most, or arguably the most successful publishing organisation the world has ever seen. The Watchtower magazine itself was the highest circulated, most translated, most read, studied and obeyed magazine the world has ever known. Their study books are among the most widely distributed and annotated texts in history. These are amazing achievements, and they did this in the post-war west against the backdrop of declining interest in religion in society in general. Their growth is all the more impressive compared with the sharp declines of other churches over the same period. (I know there are other religious success stories, most prominently the Pentecostals. But frankly that was largely a political phenomenon in South America, and short lived in most other places.)
It's the tremendous success of JWs in the twentieth century that makes their recent reversal all the more striking, and interesting... and for those of us who care, hopeful that certain things may change.