If 3D printing is the next big thing in technology, what opportunities does it afford when it comes to audio?

According to a 2013 survey by Motorola, more people watch TV and movies on tablets than on television sets/home theatres. More people than ever consume most of their sound over headphones, rather than speakers.

• How do we adjust our creative practices for headphone listening?
• What improvements to headphone sound do we need?
• How can we prevent people from damaging their ears when so much sound is consumed loudly on headphones?
• What other questions do we need to explore and address related to  headphone listening?

There are elements that could tie in with the binaural tracking workgroup proposal.

More and more gesture-based computer controllers are being developed (Leap motion, Myo, etc.). In the movies and TV (hello, Star Trek fans), these always have sounds, but as yet, these devices are usually released without sounds, to have each implementation/software using the device implement their own fx.

Should gestural sounds have some form of standardization, in the way that keyboard sounds and mouse clicks have?  What are some “universal” gestures that might need a standard set of interface sounds?