The old ones are there they just wouldn't be worth playing to those concerned with the issue. To those that don't want a wipe because they don't care would be happy too playing on these servers. There is no downside.
The solution is so simple. Create new servers... This was my something else. The ruined servers can be marked by an * in the server select list with reason. I would expect them still to ban abusers, any further action to enforce rules or remedy the server would be icing on the cake. In the meantime just make 3 new servers…