The economy is tough on everyone, and some businesses—whether they aren't moving enough product, rent is too high or their business model no longer works—have pulled out of Rancho Santa Margarita. Still, a number of businesses have moved in, including the newly-opened Embarcadero restaurant and Togo's. In a periodic feature, Patch is asking the community to throw ideas at a storefront. Who knows, maybe something will stick. Maybe there's an idea out there that needs to be nurtured. Tell the community what you'd like to see in a particular location, what works and what doesn't, and why your …