No. The reason is that the suspicious and condescending mindset of Brooklyn is too ingrained. The leaders of Mormonism realized that they needed to drop the weird stuff, or at least keep it real quite, in order to become more acceptable to the mainstream. Brooklyn seems to revel in their oddball status. If there was ever a chance for a change, it was in the 50s. I believe that Knorr and Franz did more to stunt the growth of JWs than anything with their insatiable lust for power. This can be seen when administration became more centered in Brooklyn than in the local congregations.
It's funny that everything that the R&F identified as a problem and moved to remedy was almost always taken over by Brooklyn. The prime example are the Quick Build Kingdom Halls. I went to a number of these prior to the Society taking over, and they were fun. It was trully enjoyable to work and eat with other JWs. One word describes my time at those Quick Builds: joyous. This time made the WT study on Snday afternoon more enjoyable because you saw a true brotherhood coming together for a common goal. I went to one Quick Build after the Society took over. It was not the same. It became sterile and joyless. It became more about getting it up, than having fellowship and putting the Hall up.
The point I am taking so long to get to is that Brooklyn has to have total control. They do not trust the R&F to do the right thing. This is the thing that I see which prevents the JWs from becoming more mainstream, like the Mormon church.