If the corners are so bothersome for fan-editors, they can just crop them out.
http://postimg.org/image/4v9vrr8uj/
As you can see, it makes little difference. I'd rather Harmy not waste his time with it.
Also, what is the plan after 2.0 is released? I imagine Jedi will be worked on next, but will there be any more work on Empire, as there was with Star Wars?