According to AJWRB the organization, thru some HLC's has already allowed witnesses to use 'Hemopure', which is the bovine equivalent to the product mentioned here - just pure hemoglobin without the cell walls -as stated that is 97% of the RBC.
I think this is the direction that the organization is going to take - personally. They have to do it with great care and graduation to avoid lawsuits for wrongful deaths in the past. The new 'blood card' is the next step to making witnesses think they can chose for themeselves - next will come analogous transfusions, then a complete removal of the restrictions. They will maintain the doctrine for a long time - but will allow witness to excercise the conscience - thus protecting themselves from open accusation and litigation. It might become a non-issue in reality - just a doctrine kept with no punishment attached.
Just My Opinion
Jeff