Traditional towns are good for infill projects because they already have a walkable fabric. It doesn't make sense to invest in the pedestrian experience if the town's not walkable. 

Traditional towns have good density for a main street within walking distance of the residences. Neighborhoods should be dense enough for an elementary school, a corner store, and a park.

Wide streets and setbacks fail to define space. Buildings should form an outdoor room that provides a sense of enclosure. 

Pedestrian gaps disrupt the street and waste important sites. We should fill in the gaps with important buildings that contribute to the street. Gas stations and parking lots can be located elsewhere.

Towns that lack services are incomplete. We should find uses that are missing, or that are in the wrong place, and put them where they belong.

Apartments and townhouses should be in central locations where everything is right there. Young people can live near the center with things to do, and old people can downsize into something more manageable.

There should be a mix of income-levels, so workers can live in the community where they work, and they don't have to commute from far away.

New development should fit with the existing buildings. We should respect the town's prevailing style. 

We shouldn't get rid of the existing buildings unless they're unsalvageable. They grew out of what was there, and everything built afterwards was based on it.

Incremental development is a thoughtful way of building. It allows us to check the results as we go.