There's a scripture in Joel that says God will reveal prophecy, visions and dreams to certain folks in the future. (Joel 2:28-29)
Another scripture in Amos has God saying that he won't do a single thing until he has revealed his confidential matters to his prophets. (Amos 3:7)
Since the GB of WT Land do not know how to interpret prophecy, then they aren't his chosen ones per these two scriptures above. They have no God appointed authority because 99% of their interpretations past/present have never come true.
I have my own interesting speculations about the future but I would never hand over my creative works for them to steal. Even if I sent a journal of my findings they would either throw it away or get me in trouble for independent thinking.