Welcome, same colour scheme as mine. Still feels so special every time I get into her. As somebody has already said, adjusting the PIS will generally sharpen up the gear changes, but they get faster anyway the harder you drive her. Having the PIS adjusted will also help with slighty quicker getaways.
I've been through a few Maseratis over the the years, but I always come back to the GS. It's an unbeatable combination of looks, noise, space, comfort and drivability IMO. Enjoy