Its not just about concepts and providers but more about definition and scope.
Richard Stallman has some great points about the differentiation on http://lists.debian.org/debian-cloud/2013/04/msg00032.html.
Taking a step back, do we yet build and provide basic virtual machine images or are we providing for cloud only? Can I go to a debian file server online and download a vm image for kvm or xen only and has nothing to do with cloud?
I think its a good idea to cover this space first before branching out to cloud support.
Also, do we really want to build and test images from the ground up for every cloud and environment?