It seems that little to no real research is going on with GJ and his buddies, beyond looking at how "Christendom's" Bible translators rendered the Hebrew and Greek texts and adopting many of their translations. At least Freddie, oddball that he was, did some sort of research.
I agree. It seems there isn't enough imagination or forethought among the current GB to realise that if you start chipping away at the pillars of support for those earlier doctrines, the whole edifice is weakened and will eventually collapse. Then again, maybe they do realise, but just don't care anymore. There seems to be much less concern about what went before - even all the talk about "our spiritual heritage" that was common up until just a few years ago seems to have lessened. (Although they're only too glad to try to milk the org's history for these bizarre museums they keep setting up).
These days it seems the current GB are too taken by implementing their own ideas, celebrating themselves and promoting their self-appointed status as God's sole channel on their televangelism broadcasting channel and in video, to think too deeply about how their actions are undermining their supposed power base. But then, that's usually the fate of those who are too focused on themselves. As a certain saying goes: "Pride comes before a fall (or crash, according to the NWT)"!