This is my take on the toothpick. Solid Unibody Frame with 4 mm thick carbon fiber and large diameter motors just for fun.  I took her out yesterday and at first it didn't really impress me, but I immediately wanted to charge all my 2s and 3s batteries and keep flying. People always compare their toothpicks flying like a much bigger quads. It doesn't fly like a 5 inch or even a 4 inch. It has different flight characteristics. It swims through the air effortlessly, yaw spins are instant, rolls and flips with authority. Compact and only at 145 grams with a 3s 450 mah lipo. With roughly 1588 grams of thrust on tap - its achieving a power to weight ratio of 10 to 1. In my experience 12 to 1 is Nirvana, but 10 to 1 is not too bad either. What makes this quad so enticing is the small form factor. It can do all the acro moves that the bigger quads can do.  Its very fast and stable and legal to fly almost anywhere. That's the attraction to the toothpick form.
Small, Capable, Quiet and Legal.