I've been just reading the forum posts so far, this is my first post. I designed leg extensions for the Air. You can download the stl's from here, if you want to print your own:
DJI Mavic Air leg extensions @ Pinshape
Came across these on the Polarpro site; DJI Mavic Leg Extensions
Looks like a much more stable stance then the ones where you put the back legs under the body (like those on eBay).
Haven't seen or heared much about these new ones so i rolled the dice and ordered them, looks promising.