Seems like a pretty obvious concept based around existing RC drones. Replace the rotor booms with actuated tilting winglets so they provide lift and control. That way it's possible all the power from the motors can then be used for forward flight.
Tilt-Wing Quad (WIP) by pauljs75 on Sketchfab
Although I consider mesh done, it's WIP because I'm trying to figure out what to do with the texture. So far I'm thinking of doing this "Xtreme FPV-Racing" thing. My texturing skills need work, so that's where I'm going to have to put in more effort. And is it too funky, or not funky enough?