Would it make sense to add Server Fault and Super User to the list of sites to migrate to when closing as off-topic for this site? Currently, we have just "DevOps meta" there (at least that's what I see):
We can't setup migration path during beta phase but diamond moderators can migrate a question to any site.
I assume the proper path would be to VTC with a custom reason and flag for moderator attention when there's more than 3 votes agreeing this is a proper destination (if we don't catch it by ourselves).
We (moderators) would check with proposed target site moderators to ensure it would be acceptable on their sites before.