Perhaps. Small group, if differences could be set aside to work on moral clarity vis a vis that common enemy, it would be a positive. Reading the thread, for many overcoming differences may be difficult.
We have to start somewhere. The Catholic Church has really dragged behind most American Protestants/Evangelicals in accepting the unique relationship of the Jewish people to the same Jehovah recognized by both, and for Christians, the paradoxical but necessary role the Jewish establishment played in bringing about the sacrifice of Jesus that is central to their faith traditions. Now that the RCC has finally seen the light, one can hope.