The concern here should be, not controlling the types of business and how large they should be, but rather the form of the buildings and their relationship to the street. This will take care of the size issue. The only concern then would be restricting the types of businesses that would not be condusive to the fabric of family life.
The buildings and streets will survive long after we all pass from this earth. We should then concentrate on creating beautiful, useful places to live and leave the uses to the needs of the community surrounding.
