Sorry - I'm late but I saw the topic just now...
I thought about doing my "plan" in 3D. But such wishes I must shift to a far, far later time.
It is not really complicated with TG3 but it needs the double rendertime of course. 3 or 4 CPU-generations later I think about it again...
I have no experience yet if it's better to keep 2 directories with separated right or left frames or convert each two frames R/L to one 3D-frame and then stich the movie.
Another thing:
In my 3D pics I had the problem that there are little differences in the rendered terrain between left and right frame (strangely enough not the objects). These differences feel like flickering in your eyes and make you tired if you look an animation. some people even get headache.
Also it must be considered that with moving camera and focus the Zero par. point must be moved as well. I could not calculate this - I would have to try and check the render results.
I'm sure there are many specialists on the world... unfortunately I don't know any
In summary:
It is entirely possible, but needs intensive research.
...perhaps after 2020 ??