Sorry it took so long. Swamped just now.
1) The blood policy is just that; policy rather than a core tenet now. The definition of four "major components" is an artificial one not made up by physiologists or physicians, so they are generally puzzled when a JW discusses it in this way.
I'll give you the short answer here: the GB and decision-makers have been divided on the policy and that's the reason for the inconsistency. Once the door opened to fractions like Factor VIII, it became easier to take a good look at what the policy really meant and make incremental adjustments.
They cannot ban all blood fractions. If they put the matter strictly in the "field of conscience," persons would still ask, "Yes, but what does the Society say we should do?" Or feel weak in faith if their conscience "permitted." "Conscience" would be tantamount to "no blood," is how some have reasoned. What's maddening is that there are those at the top who clearly understand that we have misapplied these texts. To acknowledge this would add to the disillusionment now becoming more widespread over the generation "adjustment." There are legal considerations as well.
So now you can eat ham, Mayo, Swiss, and bread--separately--but you cannot eat the sandwich. And you can take hemoglobin prepared from cow's blood!
I am aware of a web site that is a simplified presentation of the very reasoning that has gone on internally for a very long time; most persons don't know that there has even been debate, but there has, from Day One of the blood ban. I suspect it would be dulling reading for many, who just want to have the Society tell them what to do--easier that way. If you haven't seen it, I'd recommend you take a look. And I would very much appreciate and respect your comments on it.
www.jwbloodreview.org
2) I'm hoping others will supply their "judicial" experience in the oral sex issue. In short, the Society states its policy is not to police the bedroom, yet it constantly refers to "degrading practices" from the platform particularly. Not to get judicially technical, let me just say that, depending on their training or level of humanity, elders either look the other way (on the one hand) or get somebody in a back room and mercilessly grill them on the most intimate details, attaching all sorts of pseudoscriptural names. Varies from congregation to congregation.
3) If the "faithful slave" were to issue apologies on those policies and dogma on which it was wrong over the years, many would lose their viewpoint of it as Ultimate Authority, much like the Pope when he speaks ex cathedra--a de facto infallibility. It's easy to say "we all know the GB is composed of imperfect humans," but when one is before a committee questioning loyalty, one will be forced to accept that there is a channel, an FDS, and that the GB speaks for them and enforces its authority.
There have been adjustments organizationally in an effort to be less hierarchical, and many of these are legal protections. These are becoming more public knowledge, as you will see in a post today from Comment.
A personal experience. You will recall the district convention when the senior man attending read the statement from the governing body ("Society," whatever) that commented on the 1975 fiasco. I was present when Bert Schroeder read it--I admired him tremendously, have great affection for him. He literally stammered when reading it. Upset myself, I asked him about it. The "apology" had turned out not to be that at all. He told me it had been cobbled, edited, lines added, internal discussion about the precise wording, "balancing things." What most publishers heard was, "It's not our fault, it's yours for running ahead."
Today I read younger posters who think the whole 1975 thing was a fabrication. They are not interested in the "generation" change. You will understand.
In haste,
Maximus
Hope this helps; will post you privately. And no, it is certainly not an intrusion. I deeply respect and appreciate your e-mail to me.