If the GB, WAS to get rid of the door to door preaching, and institute tithing, and completely do away with the Watchtower mags, that would be foundationally earth shattering. MANY, MANY, will question, and awake, and be wondering, "what is going on with the org i ONCE new".
Those changes, specifically, would change manys mindset, because, those were things that the GB, has said for over 100 years, were the "proof" that they were the "chosen" org of Jehovah.
Going DOOR to DOOR, for years has been proclaimed as, "fullfilling bible prophecy" with Mathew 24:14. The tithing, is what the nation of Christendom does, and "we will never do this", has been toited over, and over, again by the WTS, as "proof" of the orgs "inspiration". The Watchtower magazine, is the "stinging scorpion", that will "expose" Christendom, thats what the GB has been saying for years, and as being proof of bible prophesy, fulfilling Revelation.
If they were to make the above, fundamental, changes, it would further undermine them as being an "inspired" organization. I actually hope they DO make those changes. It would show them for being so hypocritical, and full of shit, like many of their other false prophesies. Yes, there will still be some that will just sit there and nod their heads, like the brain washed idiots they are, BUT, beleive me, changes like doing away with door to door, instituting tithing, and doing away with their "flagship" magazine, WILL shake things up, and wake up many.