As most of the specific car upgrades have been covered...

General Marketing

Add a section on the configurator for the Porsche Exclusive options with pricing. Reducing the complexity of the current ordering system (and lack of dealer sales staff knowledge) will boost your profit immensely as most people would choose at least some of these options to make their cars more individual.

Improve the choice of standard colours available on each model and stop charging silly money for "special order" colours which were once part of the standard range. Bring back more of the standard non metallic colours from the early seventies - signal orange, slate grey, chartreuse green, albert blue etc.

Make it easier to order contrast stitching for the entire car in a range of colours like Ferrari do instead of the stupid and complicated way you have to do it now by adding thicker steering wheel, aluminium handbrake etc.

Improve the bicolour options to allow the customer to choose which colours they want to combine instead of the current mandated options which are poor IMHO.