Packaging an appliances as a Live CD is very useful because it allows us to support installations to physical hardware AND a wide selection of virtual machines. OTOH, it can complicate the development process quite a bit so what I suggest is that you develop your appliances by deploying Core to a virtual machine and then do the necessary integration. If possible takes notes while you are doing the integration so we have good records to go by.

When you have a result you are pleased with, you can share the result with us on one of the many free file hosting services and we'll play around with it. If it's good - we'll repackage it as a universal image and add it into the project -- which mean we will periodically rebuild it with updated components.