Here is Mark Pavidis' list of tuning importance. It is from a magazine a few years ago listed most important to least important:
Tires
Front shock location
Rear toe
Rear shock location
Shock fluid
Diff fluid
Foam inserts
Front camber
Rear camber
Ride height
Front toe
Caster
different drivers, different opinions... at least 2 interesting things here, droop not mentioned, and caster dead last
thanks for sharing
Paul