This is one of the reasons why I think we should have good relations with other Kahanist groups and even if we have personal disputes, we need to pretend to be friends so we can work together on the important issues. This symbol is really something that the Kahane family should own. If they were/are the true owners, they would want his symbol to live on and be honored the way it deserves to be.
BTW. I just thought of an idea, but it will need work. We have a seven point plan, but there are six points to the Magen David. If we had a symbol for each one and put the most important in the center it might fly.