I chuckle at the idea of Gawain meeting those three. Mainly because she'd be the least mature among them and the image of Anya, Eri and Kanna working together to teach Gawain how to behave and be nice is just precious.
I certainly hope that spoilers:end of spoilers
at least Derieri and Monspeet also get revived and another chance to just stick around a bit. They always felt like they got the shortest end of the stick compared to how interesting they were.