GTS would do well to capture that feel of GT5P. It sure was a grindfest, but I loved the graphics and the white RM Corvette. I never got to do the online bit so, missed out on the RX-7 RM.
When I see the FIA GT3 aspect of GTS, if it was that alone(can't help mentioning it again), it would be a fantastic game. Just concentrating on all the graphics, sound, track maps, ambience, lighting, gameplay, AI, photo mode, along with driver etiquette, could lead this to a unique experience.
How would it be different from games already offering the same types of cars with pretty good graphics to boot? I'd love to find out how PD would do it.
A small team should stick to making a small game. I'd have respect for PD if they kept the tasks simple, to make the game mindblowingly fun.