[libvirt] Question about supporting other hypervisor

Hello, I have a simple question raised yesterday. CIM(Common Information Model) is a kind of good I/F (to support VMware, Hyper-V and other platform). As a CIM Provider, libvirt-cim is going on. But for CIM Client, Is not going on. Is there any reason for not supporting CIM on libvirt driver layer? I am thinking about cim-xml driver (like remote driver) in libvirt. Ref. http://www.dmtf.org/standards/wbem http://en.wikipedia.org/wiki/Web-Based_Enterprise_Management Thanks Atsushi SAKAI