No advantage really to altering things like the clutch clamping pressure but other changes can make the car better to live with. Typically the gearbox mapping in D is aimed at economy so does it's best to get you into 6th ASAP. And sport is just the opposite, Seems to hang onto gears and changes down at the first sign of pressing the accelerator a little bit more. A remap can make the car nicer to drive. You just need the right person to map it.