The first one:
1. A fast, efficient, low-cost public transportation link to downtown
Yeah, ya think? We usually use the Chicago airports when we fly, both of which have El stops in the airport. On the average 4-6 day long trip, those train stops save us about $80 in parking and gas, since we don't have to drive to the airport and leave the car parked there. That's also less car traffic at the airport, fewer occupied parking spots, more money for the Chicago Transit Authority, and less carbon emissions.
Meanwhile, in New York City, the home of the subway, the birthplace of public transportation, one of the major airports (LaGuardia) is served by a single bus route. And the buses don't have maps on the walls or comprehensible speaker systems, so you have to know which intersection the subway station is at, and what the area right before it looks like because you won't see or hear it coming. Great idea, New York.
There are a bunch of other great ideas, too, like free Wi-fi. I had no idea airports didn't already offer this, and I can't believe they don't. Jesus, even McDonald's offers free wi-fi nowadays! Also convenience stores, more seating, a quiet area, and a short-stay hotel where people could even just grab a shower before they leave. And yes, I agree, turn off the damn CNN. It's another loud voice yelling at us, it's distracting, and airports should be looking for things that calm people down rather than stress them out or rile them up. CNN is, uh, not the answer.
My personal advice? Think about an aesthetic other than "stainless steel and round like in the Jetsons." It's ugly and it evokes all the negative imagery and themes of science fiction.