Thanks! I like the idea of burdening them with a past to reckon with, it should have occurred to me at the start. Maybe also certain vestigial mental health issues, to go along with the leftover magical power they might have kept.

The rez idea works if I can reimagine a few assumptions. I had thought there would only be a few of these folk in all the world, but perhaps they've had time to proliferate once they found each other and learned to overcome their habitual isolation.

Now I'm wondering if there was at some point infighting among some elves that led to a certain number of 'forced mythians'. Such folk would be distinct from the voluntary sort, slightly more like their old selves. Rendered sane against their will, resenting their own lucidity. That's an angle I can really have fun with!