Not bad, but we'll have to see how it would be implemented and what the real benefit of accumulating them would be. But personally, I'd prefer if we were allowed to awaken at least one of the sister goddesses...like the Goddess of Justice (from LFFG).
This Goddess could be incarnated in the body of Diatima and it was quite fascinating. Also, you can always refer to the “ghosts of the past”.. Who's to say that if Diatima survived the cryocapsule, the other members of the hostile “Organization” that is Raven's (and Dia's) sworn enemy couldn't survive?
Surely the dead boss of the Organization could have had powerful aides who managed to escape. And then the story could have gotten even more interesting. The 3rd force, possessing the remnants of ultra-modern (by the standards of this medieval world) weapons, is trying to enslave women for their experiments, forcing the King to cooperate.
And in the final game two Goddesses - the
Dark Queen Luna-Raven and the
Goddess of Justice Diatima, having defeated the King and his huge army in a hard struggle and having united all known inhabited lands under their mighty divine hand, go to the
Cursed Lands - to storm the high citadel of the mysterious Organization, where unimaginable horrors and experiments beyond good and evil are going on.
Spreading their mighty wings, the two immortal goddesses rush to the attack, leading the faithful Hellions and other honest warriors. And it's all set to this music.

This is what we deserve.
