Rapidly urbanizing areas need to think long term in planning for transportation (another Fairfax disaster area) and open space/recreation. Communities differ in the initial assets they bring to the table, but historic sites and streams are obvious places to begin.
Chantilly was destroyed in the 1980's for nothing more than another string of cookie cutter malls like you can find along every major highway in NOVA. A shame. It could have been a major, permanent asset to the region. Now it's just part of the congestion belt.