I think that the resent changes provide quite an insight into the average Witness mindset.
After years of being cultured to become dependent upon the Governing Body, the average Jehovah's Witnesses has nether their own personal conscience or the ability to reason spiritually or Biblically for themselves. This means that even if the GB seemingly lightens its control over the sheep, it doesn't mean that these qualities will return, no ... as previously commented by others in this post, the Brotherhood will de-evolve down to the new standard allowed. This should be seen by the immediate adoption of beards, women's slacks and the loss of ties. Why? As I heard one mature Brother say ... "Because we can". Which is really quite a childish attitude, when you think about it, for if you follow the idea that God deserves the best, then such relaxations would actually be meaningless to you.
And for the future, if changes to birthdays and Christmas becomes a reality, you can guarantee, their immediate and wholehearted adoption into the JW lifestyle, too ... purely on the basis that "we can".
But a thing we need to remember that these changes are not for us personally (by that I mean current members of the Faith) but for the potential members the Governing Body hopes to draw in. They know that after reforming the Church some will leave, however they are expecting much more will enter to compensate for the loses. Yet a thing that will become apparent, is that the new generation of Jehovah's Witnesses will never be as hardcore believers as those of the past.
Having not being put up with pain and embarrassment of refusing birthday cake or singing 'Happy Birthday' as children, or have to cut family off indefinitely through the current disfellowshipping rules, newer Witnesses will be more flexible and more willing to Church shop, than ever before.
Just as when the Popes of Rome lost their real power over Catholics in the 20th century, so the Governing Body will loose theirs, but not in the way that they thought or expected.