1- The number of memorial partakers will continue to increase. (I don't think thats been mentioned; apologies if it has.)
At a time when the number should be decreasing, it will become a bigger embarrassment than it is now. The Society has already said it doesn't keep track of the anointed (faithful and discreet slave), so the next logical step would be to do as predicted by Cedars (#7), Jnat, Sapphy, and breakfastof champions, and stop publishing partaker (and other) statistics.
2- Due to eventual decreases in many areas of the organization, the new headquarters being built at Warwick will no longer be needed in 30 years (possibly less), and the property will be sold for a whopping profit. New down-sized facilities will be built in another rural location for next to nothing, leaving Watchtower with a much needed cash flow.