The blood doctrine is not going away.......can you imagine? This isn't some doctrine nobody already understands, or thinks is part of their belief system anyways like overlapping generations. This is BLOOD.
Its in the top three of what JW's are known for.
1) No holidays or borthdays
2) Compulsory door knocking
3) No blood under any circumstances (depending on circumstances).
It isn't going away. They are just going to stop with the gestapo schtick over it, because its bad press, and they will get kicked out of some countries if its compulsory.
If they really changed this doctrine, don't overlook how many people would be gone, and how many law suits would spring up.