Great points, to answer generally, we don't have all those answers yet, our immediate goal is to support the next generation of great sites and cater our service to their needs. We are building out a pro service that is being shaped by all the feedback we have received from developers and publishers. Feel free to contact us.
Part of supporting the next generation of great sites is giving them the confidence to build on top of you.
IMHO, this is "problem" you solve which helps you gain traction, not a problem you solve once you have traction.
Just tell people what happens if they build a great site on top of the service you are offering today. Otherwise you're telling people to wait and see. (which I don't think you want)
Agreed, we did spend some time thinking about this stuff and writing down these points, but figured traction and proven work speaks for itself. If you check out blog.embed.ly, we love to broadcast any site that is using us. Always appreciate the feedback.
