Yes, I got carried away a little with the animation to-do list and got distracted by other projects. They're sorted by priority though, so I'll get to those first going down the list. The perspectives and directions isn't what adds most work. You may also be interested to see the repository with CI rendering.
How did you render the images with a transparent background in blender?
In Cycles that's under Render -> Film -> Transparent, with Blender Render it's over at Render -> Shading -> Alpha (Transparent). And make sure your Render -> Output has an alpha channel, which I believe it has by default.