I agree that the number of pioneers to publishers has increased but you have to take that with a grain of salt since the pioneer hours were cut by 1/3rd (from 90 to 60). That helped create a bit a bump. Still, I agree that putting that much time in (whether 90 or 60 hours per month) shows a level of committment. Overall hours is a function of increase in number of people since the WTS is still reporting increases although they are not increasing at the level they once were. The 15 min publisher is not a valid argument since there are very few that even qualify for that "provision" and at best it was a one year bump. Interestingly, the average hours per month in the US is down slightly (from close to 10 to close to 9). I anticipate that number will increase this year due to the bump of allowing both parents count the family study.
On the blood issue, I'm friends with a non-JW health care worker at a larger hospital who deals with JWs on a fairly regular basis (as regular as you can with a religion that comprises about .05% of the population in the US). This person told me that if the HLC is not involved in a blood case, between 1/3rd & 1/2 of the JWs will compromise. Of course, if the HLC is brought in, that percentage drops significantly. Still, even if half of the JWs are willing to sacrifice their life, I agree that is a significant committment. But, if you were to go back 20 years, I'd be willing to bet that the percentage that would take blood would be much less. Again, this is just one person's observation but I take them at their word.
I think the committment level starts showing itself with the small things and that eventually leads to the big things. That's why I can't see the sudden collapse but more of a steady decline. Eventually, the apathy and disobedience, the damping of enthusiasm and commitment will catch up unless something is done to stem the tide. I really think WT leadership is well aware of the trend but hasn't figured out what to do to stop it. I'm sure they're hoping the big A happens soon.