I feel that the air factory is a superior value proposition to any other factory. Air units allow a game to snowball in a way that other unit types can't seem to achieve. I put this down to a combination of their ability to navigate over CSG and their massive speed bonus relative to tanks and bots. I think the air in this game is too fast, but some other players have their own ideas for how they would nerf air. I would like this thread to be a discussion on how air could be effectively nerfed without ruining it.
Air speed for units not called Icarus or Wyrm should be nerfed by 20-30%; if the relative speed difference wasn't so large then air wouldn't be nearly as strong. Naval needs a speed buff on the other hand in order to prevent air from being so strong on sea maps.