Where do you increase the draw distance? Was playing tonight in the liberator and enemies were not being drawn until I was within 150m and by then your down from AA
That's actually done by the server; you should be able to see tanks and other vehicles/aircraft just fine from max altitude, but the maximum draw distance for infantry is supposedly around 300 meters.
This gets drastically shortened to as low as 20 meters if the area is swarming with players. They did this because too many people were complaining about terrible frame-rates in beta, but are going to do something about the new situation with the next major patch sometime in January (supposedly!).