Not for me...
I lve spent time and money making my manual car as simple as I can.
No fancy gearbox software (or hardware) to leave me stranded on the side of the road (read expensive & aged). No need for SD2/3 to change gear for me..! Clutch lasts longer (operator error caveat applies) No frustration because the ride is either so harsh in sport mode, or the gearbox so bad in standard that everyone who owns one, whinges about the ride quality at some point- or they never drive them ! ( I wont mention auto mode ! )
No Skyhook since I switched it off ( see above for SD2/3 and trips to MD for sensor diag...) Best thing I ever did for this car. Made simple by the absence of what I regard as the ill judged integration by Maserati of the gearbox and Skyhook software. Something they have rectified in the MC20 at lest...
If it's just a case of aesthetics, get some plastic stitched to the 4200- the C.C. box is a completely different beast...and that's before you put all the practical reasons to avoid owning it to one side...I insist on three pedals and a stick i. After driving a couple of flappy paddle things on track, I knew it was not something that I wanted from choice
If you dont care...there are plenty of reasons why the GS is an "evolution" of the 4200 and is a quite different beast from your lovely GT.