I'm not going to add yet another new setting.

Again, the entire point of this discussion is regarding extended persistence contexts, so I'm not sure why you are even mentioning other types of persistence contexts. If you choose in Jipijapa that PersistenceContextType.EXTENDED should not imply a manual flush mode... well I guess that's your prerogative. I think that is completely wrong, but its your call what you want to do in WF.