They'll never drop 1914. Oh sure, they'll continue to put out "new light" on the MEANING of 1914 ad infinitum until it totally loses all meaning (in my opinion it already has, being 95 years ago and all), but they'll never concede that nothing significant happened in 1914. Of the countless dates they've predicted, 1914 was the only year where something earth-shaking really happened. It might be the only thing that even comes close to giving them a semblance of prophethood.
Nope, the only thing that'll clear out the deadwood is a total WTS makeover ala Worldwide Church of God. The only reason it hasn't happened in the WT is because there is no Herbert Armstrong to overthrow. The organization has become an entity unto itself.
Unless the WT swallows some humble pie and invites some of the nutty-but-compelling-in-their-own-way "anointed" folks (i.e. an "e-Watchman" type) back into the fold and admits they've totally run out of ideas.
The last thing I remember the WT saying in a fairly recent mag that even sounded like a fresh idea was an absolute damp squid. It was something about the "second resurrection" to heaven happening beginning in 1918, seeing how it was 3 1/2 years after 1914. They said the correlation to "times, time and half a time" - or was it Jesus' 3 1/2 years in ministry - was an "interesting possibility".
It was neither interesting nor a possibility.,