I hope there’ll be a way to help the innocent childDAO curators who could very realistically lose their entire investments, aside from any donation assistance as a result of 2b. Other than that, I think the proposed 1b/2b/3c is the best choice.
EDIT: I just saw that Griff Green from Slock.it is asking anyone who is considered an edge case to contact him by direct message in TheDAO Slack. He is trying his best to record those affected in my comment above. Please contact him for assistance.