I think they might now allow birthdays, Mother's Day, Father's Day, and Thanksgiving to become conscience matters since there was very little justification for them anyhow.
They won't allow Christmas or Easter because they can still call them pagan and old timers would lose their minds. They might, however, say that it is a conscience matter to attend those celebrations at unbelieving relatives' homes.
I don't think they can move much on blood, even though it might seem obvious, because they've stuck their nose in people's Medical Powers of Attorney and have an entire Hospital Liason program and too many lawsuits that they've won to back out now. Also, I think they'd be terrified of all the unlawful death lawsuits they would be fighting off. Follow the money. This is one change that is too expensive. Sad because it's one of their most egregious beliefs.
I think they will continue to ignore 1914 and it won't appear in any literature again. A lot of people have appeared to forget about it anyway. Just more of "soon, soon, soon."