Daredevil (Charlie Cox) is already a known vigilante in Hell's Kitchen so any government registration efforts to hold gifted individuals and vigilantes accountable should make mention of this character, especially since unlike most members of The Avengers, Daredevil's identity is entirely secret.
By the time Captain America: Civil War opens in theaters in May 2016, Marvel's Netflix programming will have already introduced Jessica Jones (Krysten Ritter) and Luke Cage (Mike Colter) as well (not to mention, Punisher (Jon Bernthal) and Elektra (Elodie Yung)) - other characters who could potentially serve as Avengers down the road. Will the government make an effort to force these vigilante heroes alongside Daredevil to register?
Jessica Jones debuts on Netflix this fall and Daredevil season 2 releases early next year. Knowing the fan interest and speculation of Daredevil appearing in Captain America 3, and knowing the major roles Cage and Jones played in the Civil War comics, the first movie of Phase 3 is the best and most sensible way of bridging the gap between the Marvel TV Netflix universe and the larger MCU. What amazing cross-marketing would that be?