VMware is purposely pushing partners away from vCD GUI..
VMware has publicly stated that vCD GUI is frozen and are well aware that it is barely functional.
Their main efforts with vCD is providing an API around the core functions of it, and all new features will be API only features.
They actively push partners to either write their own GUI around vCD APIs, or to AirVM or OnApp to provide a GUI.
VMware has no further interest in making vCD GUI work, as its biggest sin right now is a dependance on Flash & the depreciated NPAPI browser plugin framework. Since Chrome has disabled NPAPI in its current builds (but can be enabled to make vCD GUI work), but will be ripped out totally in the very near future, as well as Chrome will be making Flash a click to run feature, means vCD GUI won't be functional in Chrome at all without clicking to run, and even then you won't be able to upload/download OVAs or ISOs at all in any fashion without switching to a different browser (certainly not Edge either). I believe Firefox has NPAPI plugins disabled by default now too, although I don't know its' schedule to fully rip out NPAPI at this time, so that is out as well.