Yeah, why not. It would be nice to see what everyone thinks and develop some ideas. The top things I'd like to see in the game are:
1) Complex micromanagement. I love to plane everything out in detail and see how the airport starts working out. An example would be what planes land when, what parking they use and maybe even when baggage is collected, boarding starts, etc.
2) Good pathfinding. Theres nothing more annoying than having your passengers/staff moving all about the place not finding the quickest way to get to the plane.
3) Customization. I know that this is already being worked on but I'd love to be able to make my airport unique. That way you can spend hours and hours on a game.