I figure since Version 1.0 has been taken offline now, SE may as well release the server software for it so people who enjoyed certain aspects of v1.0 can host their own private servers of the original game as it was when it went offline without interfering with A Realm Reborn. They're practically two different games anyway, so I don't think that it would detract from the sales for ARR at all. As superior as ARR is, I still think it would be nice if v1.0 was still available as well, even if not controlled or hosted by SE.