I haven't touched on race cars much in my various posts, so here are the ones I'd like to see. My criteria primarily revolves around: "Does an existing race car have a viable opponent?" So with that out of the way, let's go.
Chevrolet C6 Race Car
The current Aston Martin DBR9 sits awkwardly in the GR.3 class in what is essentially a no-mans land, holding a roster spot in a class the car is clearly not meant to be in. So why not add it's primary historical rival in the C6? Now I specified a generic C6 Race Car instead of the C6.R as I know Pratt and Miller can be a bit cagey when it comes to their equipment, and PD has a perfectly good premium model C6 Race Car from the PS3 days that they can spruce up and add to the game as a stand in.
Mercedes Benz C-Class V6
The Alfa Romeo 155 V6 was a popular returning face, but ultimately one that has seemed to fade into the background, not talked about as much as you'd think. A part of that is the cars lack of placement in either the single player, or sport mode, doomed to rot in the Gr.4 category dominated by more modern 4WD opponents. The C-Class DTM, while Rear Wheel Drive, is an adversary which fought the Alfa toe to toe in it's heyday. I didn't opt for the Calibra despite it's prior reputation due to the absence of Opel from the game.
Ferrari F40 GTE
The mighty McLaren F1 GTR is another car that sits in GR.3 purgatory, lacking the down force to truly compete with the best cars in the class, and in a straight line utterly lunched by the likes of the Supra. As such, I decided to give it the Ferrari F40 GTE to spar with. While many people would opt for the F40 LM first, the much evolved GTE was the car to truly give the F1 a run for it's money, only beset by horrid reliability, a problem that it would not be troubled by in GT7. This specific car was chosen for purpose due to the unique nature of the other opponents for the era. The early 911 GT1 would likely end up in GR.2, Venturi is a long shot, Lotus even more so ATM. A Skyline LM could also fit, having appeared in GT before, as could some form of XJ220, while the aforementioned F40 LM I don't think quite has the punch.
Also as a bonus, I'll throw in some track wishes.
Unrealistic: Seattle Circuit - This is one of my favorite GT circuits of all time, but a return is as likely as pigs flying. One, PD isn't doing city circuits due to the sheer amount of trackside detail work required to meet their current standards, and 2, the old layout is impossible due to further developments in the area, so they'd have to come up with an all new layout.
Fictional Circuit: Heart says Red Rock Valley due to it's uniqueness, but with GT's more realistic focus in current day, I can only imagine how they'd bastardize it. So I'm saying Midfield Raceway. An Iconic circuit from all the way back in the PS1 days, and was updated as recently as GT6, so why not another update.
Real Circuit: Most people would go for a modern FIA Grade-1 facility, but I'd take a route less traveled and select Donington Park. A fast track with narrow roads and undulating hills, it very much is a British Road Atlanta, and driving it is an absolute blast .
New original circuit concept: Desert/Canyon Road Circuit - GT has had a rally course around the Grand Canyon area, but I would love a desert road course in the vein of the Nevada Highway Course in NFS Pro Street. The revamped Grand valley sort of plays with this idea, but it's very much a coastal track with cliffs rather than a proper southwestern desert course. Also this would somewhat replace the Red Rock shaped hole in my heart, as someone who has spent a majority of my life amongst the deserts of the Southwest