To echo/expand: Hagalaz is absolutely correct here. WotC hasn't gone for the cheap thrills here that they have done for the modern banlist. Cards come off the ban list when they ascertain that they are no longer a threat to the format, they go on when the meta is in a bad place. They don't ban cards just to make things "fresh" for a tournament like they have explicitly admitted to doing for modern.
WotC has also (imo) shown an admirable amount of restraint in their Legacy format management. They have taken a very long term view of things and are okay with letting the format sort out most issues on its own.