I believe that having a Module such as the ones for Enom, and ResellerCenter would be very benifishial to the community as a whole. They offer a free Reseller API which allows a person to sell products such as Webhosting, VPS, Even Dedicated services. If this was avalible then a smaller Hosting service, such as my own, would be able to offer more services with out a large over head cost of buying up servers to sell.
Example, My own server is a smaller VPS only large enough for a shared hosting setup, If a Intigration ability of the ResellerPanel API was avalible i would be able to offer diffrent VPS's, Dedicated services, SSL, DNS managment, Ect. Allowing my company to expand its buisness by offering more product.