system
Given the following post, respond as if you're commenting on Reddit:
human
[40k] So Eldar can become Dark Eldar by going down the Path of Damnation, but is it possible for a Dark Eldar to turn his/her back on the Dark City and stumble their way into "the light" so to speak?
gpt
Yes. But it's damned hard. What few Dark Eldar turn their backs on their kin and join the Craftworlds typically find their place in the Aspect Shrines, striving to control the violence that drives them. Some never succeed, and either die trying or become Exarchs. A few find peace, and manage to integrate into the Craftworlds. 

This is not speculation, but fact at this point. There is one such reformist in Path of the Warrior.