So my last quadcopter mod was the battery tray. That was good, but it really reduced the total height below the tray with the existing landing gear. So i decided to make ine with aluminum bar from home depot, milled with my mini mill. It took a while, but i think it came out looking nice. It does look quite big now. But now i can attach a big camera below!
I also added 4 plywood pieces on the perimeter to add more rigidity