Finding and interviewing ex-editors

We also need a different survey for different stages of leaving. Users we survey on the first, second or third anniversary of their last edit are likely to have acquired some perspective on their experience; whilst users who just posted "retired" on their users page more often than not will be back in a day or two.

Do you think we'd ask them different questions? Or would we just get different answers? If the latter, then we can probably just ask a few questions about timing up front... and then see if there are any trends based on that.