How can communication and navigation systems be improved in UAVs, cubesatellites, or even between platforms? (eg cubesat swarms connecting with UAVs)

What digital imaging or camera breakthroughs are critical to new applications or extended use of future aerospace platforms?  (eg higher/lower resolution, infrared, hyperspectral imaging, etc.)

Suggested improvements for data collection and instantaneous/on-board data analysis?  Improvements to data transmission (eg between vehicles or to ground/telemetry)  

What manufacturing methods are need for future platforms or to reduce costs (eg 3D printers to make customized UAVs)?  How can manufacturing be more automated?

What other types of platform monitoring will be useful, for example mobile applications?

What breakthroughs will allow for smaller or more agile platforms (eg nanotechnology, flexible electronics, etc.)?

Space vs. Aviation (overlapping technical challenges)

New power and propulsion systems (eg all electric or hybrid propulsion systems)

More efficient, durable, reliable component systems

Re-usable spacecraft and in-space services (eg re-fueling, repairs or replacements in the field)

New types of engines and propellants for exposure to extreme temperatures with re-firing capabilities and greater fuel efficiency