As I posted previously:
this is more than an idea, we started a project wich will involve blender users to create templates, ans a script which can make blender replace video-texturemaps on 3D objects, from an external file, any video app can write that file and have our package as a growing feature.
we are still in our firsts stages, but we would love to hear your opinions (Open Movie Editor´s programmer has confirmed this will be included as a feature).
This is our blog:
this is a transition created with blender 3D: