Recommendations for suspension mods on a new truck

I love airbags. I don’t want my truck riding like a lumber wagon when the camper isn’t on it, and I don’t want my headlights pointing at the sky when it is.
Timbrens, stiffer or more springs, none of that stuff can give me that.
Anything that relies on squatting the suspension to engage the overloads is also messing up your headlight aim.