This is definitely a direction we're considering going in, but we're not quite sure exactly what people want. Are there particular features we should provide,

This is definitely a direction we're considering going in, but we're not quite sure exactly what people want. Are there particular features we should provide, constraints on domains, or other things that we could brainstorm that you have in mind? (You can also e-mail me with your thoughts, my e-mail is now in my profile.)