Interesting info! It seems like the first things people do when modifying is fit bigger wheels and lower the car, usually for looks, which not only messes up the ride quality but possibly also the handling, requiring stiffer springs to maintain the same degree of body roll. I guess uprated ARBs would be a way to improve the handling without the same effect on ride or cround clearance, but the bars on the FR are already pretty large (23 or 25mm front - unsure about rear).
I'd wondered if the standard suspension would be much more comfortable than the sports version, but even my FR doesn't handle that well and rolls and understeers quite a lot in corners, so I guess the S/SE suspension would just be worse. Also I agree with you that the steering is too light - much more so than my old Focus Mk 1 so little feel...
Have you actually got a rear ARB? Cupras only have the front arb and no rear one.
