Half the homes need to be torn down, and 2000 lots are already empty. So it's just 1000 actual homes that may be re-inhabited, and 5000 empty or soon empty lot

Half the homes need to be torn down, and 2000 lots are already empty. So it's just 1000 actual homes that may be re-inhabited, and 5000 empty or soon empty lots. That could be pretty tough to deal with, whatever your plan. Probably not dense enough without re-building to avoid the blight returning again. All those empty lots would hurt. So some huge money will have to be poured into it to accomplish much.