If the https://discourse-mediawiki.wmflabs.org/ pilot is successful, we will need to have a plan to migrate users and content.
Guidelines for pre-SSO usernames i.e. "user your Wikimedia username"?
If I am reading this thread correctly, usernames of local accounts used during the pilot would not be relevant in a migration to SSO because Discourse takes email address as the main user identifier. We should advise users to register with the same email address that they are using for their Wikimedia account, though. Correct?
Clarity about what will happen to the accounts and the content created during the pilot if we move to production.
This HowTo explains how to migrate a Discourse instance to a new server. It seems quite straightforward?
I guess the move to SSO should be done before, still in the pilot, to assure that that part works well. Testing migration to new server and SSO at once would be too much.