I think you have to add to the list:
Policy on higher education -- their pejorative view hurts many people for the rest of their life.
Claim to Divine Guidance -- this allows them to intimitate people into doing unreasonable things because GOD told them (via the GB) to do this. They should just admit that they are sincere, humble men trying to understand the Bible and encourage the masses to live a better, moral lifestyle, etc. IOW, we really don't have any special guidance from God, but we are giving it diligent study & meditation and speaking from the experience of many.
Inferior treatment of women -- it just makes sense to change a policy that prevents some of the most knowledgeable and most capable people from being in positions where they can help the most. (Consider just a few of the outstanding women who participate on this board! Sharper than any of the Elders I happen to know.)
Views on sexuality -- they've already adopted "Don't ask, Don't tell" on some of their antiquated sexual rules (ie oral sex within marriage), but it would take a dramatic upheaval to have a readjustment on sexual orientation, and such a change would probably cause many to head for the doors.
I'm sure there are others.
But if they made all of these changes, how would they remain different from "the world"?
Doc