AK MCGRATH said,
...WTBTS powers that be, were looking for loopholes around their own blood issues.
I think you are right about that. One day in the distant future the whole blood issue will likely be gone, like the former bans on vaccination and transplants. It seems the organization is in a state of transition now over blood.
In the future Witnesses will probably be in denial that the blood teachings of the past were actually part of the Watfchtower belief system. Will they write it off to saying something like "Some had misunderstandings in those days, because the Society always said it was a conscience issue?" We shall see.