I would highly suggest not to include new abilities to draw branches in v1.xxx
It would create more questions and more bugs,- features to alter... thus interrupting your v2 develpment.
It is a major improvement- it deserves to be robust and well developed.
You will have to make v2 announcement with improvements and new features.
And this sure sounds like nice new feature. If it was in v1.xx you could not say it is new feature...