XBMC&co. needs to partner with Project Mango (from Blender ecosystem) now I guess. And I am sure many projects can fill the gaps between them if needed.
Yes, ok, building an entire production/distribution/display system for a nice small catalogue of four 10 min. movies content may sound silly for a while but let's face it: maybe shortcutting the entire entertainment industry altogether is the most *sensible* thing to do from the technical, legal and economical point of view.