From what the help file said, we will have the option (in the future in the Pro version) to also get billboards automatically for our proxies, yes?

In the Studio version, yes.
For now, you have to provide an image, and Transmutr creates a billboard with this image. But in the future we want to generate the image directly by making a rough render (probably OpenGL if we can get it to work)

I’ve been wishing for this for years! I think I even asked for it as a Thea feature back in my Thea days.

Me too! Me want!

Why not a print screen of transmutr viewport with alpha background? It would be more than enough.