gistfile1.cs

public interface IServiceHostBuilder
{
   ServiceHostModel Build();
}

public abstract class ServiceModelBuilder<TService> :IServiceHostBuilder
{
   // goo
}

public class EchoServiceBuilder:ServiceModelBuilder<EchoService>
{
   public EchoServiceBuilder()
   {
      // could potentially take some "context" as parameter
      Expose<IEcho>( e => e.At<BasicHttpBinding>("http://MySite.com")); // Binding should be optional and by default inferred from the address eg http:// -> Basic Http
      ExposeMex("http://MySite.com/mex");
      Expose<IEcho2>(e=>e.At<SomeOtherBinding>("http://MySite.com/2" b=>b.SomeBindingConfiguration()));
   }
}