Greatly put Erik. It is pretty much the same discussion why someone would go for a C2, when he could also have a C4 with its better handling capabilities on e.g. snowy roads. It's got to do with the myth behind the 911 concept.

Water cooled = better = 911 purists hate it
4WD = better = 911 purists hate it
PSM = better = 911 purists hate it

So WHY build a water cooled, 4WD race car with a PSM system, when every 911 purist will hate it???

If you want a GT2 with PSM and 4WD then go and get yourself a turbo. Order a PCCB with it and get a GT2 bodykit. Ask TTP or TechArt to add a performance kit and... Voila: Here's your GT2 with all the nuts and bolts you would expect from a "newbie friendly high performance sports car"...

...but don't forget to get a Tiptronic.

I hope you see my point: As soon as Porsche would release a GT2 with a PSM, some will rise and ask for 4WD... and by the time they add 4WD, some will ask for a Tiptronic. It's utter BS.

If you want a high performance sports car which is ULTIMATIVELY built for track performance AND for pro-drivers, then pick a GT2 or GT3 (RS). If that's not your cup of tea, then go for a 996 turbo. But do not start to mix these two concepts.