It would be possible but I guess not in real time. Maybe with the new updates for better video performances.
But are you kind of "hochbegabt"? Your last posts all show a large amount of weird and complicated ideas and imaginations. Your "basic video-editing related questions" are so specific that I just stopped after the second point in your list. (Maybe I read tomorrow as I'm really tired today.
)
Anyway. All the movement in the video community feels great and of course this leads into more and more improvements. And that is a good thing.
Greetings
from Germany to Germany