Robust low-complexity control laws design is the ultimate goal which Computer-Aided Control System Design (CACSD) aims for. We recognize seven classes of services CACSD tools and environments have to support w.r.t. this view: physical system modelling with modelling uncertainty descriptions; mathematical system modelling with suited uncertainty models; system model analysis in state space, time- and frequency domain; control law synthesis; multiobjective (multicriteria and multimodel) synthesis-parameter tuning; nonlinear assessment via simulation; control code generation. We deal with state of the art aspects of such services and their integration within an interactively controlled automatic design feedback loop. This is illustrated by experience gained during the two-years GARTEUR a a Group for Aeronautics Research and Technology in Europe design challenge project on Robust Aircraft Flight Control, where 12 teams from 6 European countries demonstrated 11 different CACSD synthesis methods to design a landing-approach autopilot controller based on a Beluga-type aircraft model from Airbus Industries.