Rollback existing servers and open up 1 or 2 new servers. Everyone can have what they want then. Just have the new server unable to be transferred to or from for 1 or 2 months. Also on the new servers, players that are founders and what not can get all their items back as well as people that have purchased Zen.
Open 1 or 2 new shards with anyone that has a founder pack and purchased Zen the chance to get all their Zen and AD back without the ability to transfer anything to another server for a month or 2. That way you have 2 shards that can start over with the economy. Rollback the other servers. This way you might have a chance…