Just as there's a Special Advancement for getting one EFB for each artifact, there's a Special Advancement for getting three EFBs for one. Don't think of it as locking us out of Trinity, it's putting us two-thirds of the way to something just as good. The blurb isn't staring us full in the face, it may not even have been written yet, but with Rihaku as the author I can vouchsafe its sickness ahead of time.
Renaissance Woman is at its core a potential-based EFB. True Quintessence requires research time to replicate all the Maiden's myriad Graces. Gisena's physical parameters for the purposes of combat (not this beauty-is-an-attack bullshit) are only modestly superior to Hunger's own. Can charm her way into the Inner Ring? Definitely. Can she solo the Temple, as All-Defeating is capable of? Absolutely not, certainly not without more research time than we can afford to give her.