The best thing you can do to attract like buyers to your area is make the most, visually, of your 10,000 sq. foot patch of heaven. I work in this area, and I understand what you're saying....there are definitely "patches" of heaven and then blocks that could use a little help interspersed. Now that you're a homeowner, become active in your neighborhood - neighborhood watches - zero tolerance policies and activism towards graffiti and crime have been instruments in turning around marginal neighborhoods, and turning them into upwardly mobile hamlets all over the San Fernando Valley.
Bloom excitedly where you're planted...and others will follow. Blogging about your neighborhood is also a good way to attract attention. Try www.mystreet.com and other community based sites.
And Welcome to Winnetka!!!