In my opinion, I think the WTS will ease up on it's dogma rather than clamp down harder as other posters have guessed. I realize they talk tough in the magazines, but most of the actions they have taken in the last few years have made things much easier and less time-consuming for the average publisher.
The WTS has to recognize the declining growth rates. If the decline in baptisms like we saw last year continues they'll make changes to encourage people to convert and stick around. Basically, "mainstream" the religion so it's not so weird. This could include:
- Phase out blood transfusion restriction (they're already doing this silently)
- Ease up restrictions on talking to DFed family members ("Shunning Lite"?)
- Stop bashing higher education in every other article
- Make field service somewhat voluntary by not requiring time slips be turned in every month
This is just off the top of my head. In typical WTS fashion they actually don't have to come out and actually say they're changing a policy, they just stop talking about it. People will get the hint and elders will be relieved because they don't have to enforce it anymore.
I think in general most JW's love the social/family aspect of the religion, but absolutely dread or despise going out in field service. How many more would stay with the religion or be encouraged to get baptized if they didn't have to do field service? Perhaps hand out a tract every couple months and let the hardcores pioneer.
Doctrinally, the only change I think the WTS WILL have to make is changing the idea of 144,000 to being a figurative, not literal, number. Just like they were forced to change the generation doctrine in 1995, time will force their hand in changing the 144,000 doctrine.