Faster than other roadsters costing tens of thousands more (Z4, first generation 986 Boxster S, Audi TT, last generation SLK), and still able to hold its own with the latest Teutonic offerings, the S2000 is the best deal going. Add to that impeccable reliability, great styling, and good gas mileage and you have a recipe for the perfect roadster.
8,000 rpm redline, slick 6-speed, great handling, power top, standard HIDs, supportive seats, aggressive looks...
A top that folds to make its own boot would be nice. More power is never a bad thing. Dome light that comes on with keyless entry should stay on for a few seconds after door is closed.