That +33% build-speed bonus is pretty sweet; but what about when the Crisis rolls around? Does the Crisis existing count as a "defensive war", or does that bonus stop being helpful once you're past warring with other local-galactic empires?
Similarly, what about "total war" factions that are at war with you all the time, like Determined Exterminators or whatever? Does that count as a 'defensive war' all the time?