Ding,
Outstanding points.
There was a 2010 Watchtower explaining that anyone who died in all those years who did not have an opportunity to hear the Kingdom Message would receive a resurrection to earth.
Even though for years I heard them say the only opportunity available from 33 C.E. to 1935 was the Heavenly Hope.
But they've dumped the 1935 doctrine now too.
One other Scripture I would add to these points is, what did Jesus mean when He promised Peter that the gates of Hades would never prevail against His congregation?