I think specifically concerning the blood issue, and their essentially reversing decades of the NO blood rule, by now allowing fractions, there could be some legal ramifications. I only believe it would happen though, if many people got together, and worked together with lawyers. It would have to kinda be like a class action lawsuit type of thing.
If many folks who have lost loved ones, and the stories of the countless people who have been directly affected by the blood issue, came to the forefront, the WBTS could be in trouble. If it changed popular opinion, and gained public awareness, some lawyers would smell "blood" in the water. They may come in like sharks, and the WBTS could have quite a few "bites" taken out of them.
On the other issues, I don't feel they would ever gain traction in a legal sort of way.
That being said, the GB have a TREMENDOUS accountability for all their flip flopping on issues. It is a moral accountability, and their NEVER taking any responsibility, is where they have shown themselves to be morally guilty. They are blood guilty, and they shall be held accountable. Whether it is thru legal means, members exposing them, or a higher power, they will be accountable one day.