Dundedain:
What do you want people to sue Watchtower over? Ultimately it is the person's choice if they want to obey that policy or not. Can a Catholic who views abortion is murder no matter what the circumstances, can they sue the Catholic church if they die from a condition that could have been resolved by an abortion? No, we all have to be responsible for our own choices.
In fact someone tried to sue, not watchtower but tried to sue the hospital to force that they give their husband a blood transfusion. The wife filed suit saying that if her husband died because of not being given a blood transfusion that she and her son would become destitute as he was the only worker in the family. A lower court granted the application so that they would have to give a blood transfusion, but it went to the Supreme Court of Puerto Rico and the court there ruled that each person has autonomy over their own body and they can choose what they want to accept or deny.