We've already seen quadrotors that can carry heavy payloads, perform light shows, and play catch. Imitating a bald eagle adds to an impressive suite of functions. In practice, a flying claw could at its most basic level get a Frisbee off a roof, and in more advanced applications pick up and retrieve tools from construction workers at elevation. Combined with those other capabilities (well, okay, not the light show), drones based off this technology could even be used for construction projects all on their own. When people talk about the inevitability of commercial drones, it's these capabilities that make them really promising. Plus, it's robot eagles. If Iron Man had a pet, it would be this.