What do I think NASA should be working on? They should be building a rocket-design-and-simulation AI. A huge supercomputer that you can design and test rockets on the inside of, with the idea being that the computer can design and test generation after generation of rockets with a quickness. Hey, set up the supercomputer AND set up a distributed network processing system for it, like Seti@Home. Then anyone can donate CPU cycles to further our space technology. They could even set this up to just test out aerodynamic parts at first, see if the computer could evolve, say, a better nose cone. There are already algorithms made that will take things, make variations, test them, and then select the best to base the next generation off (artificial evolution!), so lets put them to work breaking free of this dirtball and storming the cosmos.