Hello,
The above solution using cloth soft bodies and involving physics seems to have way to much impact on performance (and is also too complex to implement) speaking about leaves (thousands of em?)
There was this grass topic using a fur material that could may be apply to leaves as well?
Else, I don’t think the shape of the leaf necessarly needs to change, it could just wingle and rotate.
For that I would rather try with a solid particle system.
My opinion only.
Edit: And I forgot to mention that I would absolutely LUV to see convincing trees with wind animation in BJS. In fact, I was even thinking of making some (but then, it’s a lot of work 