I can't help but notice that many new SE and Beta sites have been popping up all over the place in the past couple of years. There seems to be a retro overlap on some to the older questions SO houses (meaning the question more resembles that of a Programmers, SU, SF, etc question). From an asker's stand point on SO, due dilligence comes in the form making sure the question was not asked previously (becoming quite a challenge these days), and I happen to notice many of the older questions, some protected, appear to be in that type of situation. There have been a few times I have seen duplicate questions across SE sites (wish I could remember what they were!).
My question is that should these questions be retroactively be migrated? If not, what is the value of retaining these type of questions for the orginating SE that it was asked on?
Realizing what kind of impact retroactive migration could have, a possible feature proposal could be an additional flag that indicates an appropriate SE sites the question could be searchable on. Yet again, I don't know the cost/benifit side for what looks like a relatively narrow proposal. Just a thought.
Here is an example question that be could to be searchable on Programmers, but not migrated. (could fall under quality assurance in Programmers faq page)
Here is an example question that could be migrated or searchable in Game Developers.
Here is an example question that I flagged to be migrated to SU, but could be searchable in SO or Game Developers.
I know theres several questions out there to the flavor of "Should Previous Questions Be Migrated?" Just wanted to use the subject as a segway to the proposal.