"more walkable and friendly to the elderly" are very separate things, usually in conflict. The elderly face disability like arthritis, poor body temperature control, uncertainty about lower leg position or pavement contact, bad vision, bad hearing, confusion, and numerous other troubles. No normal or reasonable amount of "more walkable" is going to work.
They need family members who care. The family members need parking spaces. The fewer steps from bedroom to car, the better. A nice goal would be to have less than 50 feet from bedroom to car.