I'm not mentioning GTS. I don't know why you keep mentioning it. I'm talking about GT in general, and why single seat, open wheel, formula cars should not be in it. In my view , of course.
Perhaps I should have said "Formula" cars. Is that better?
Grand Touring cars were road cars designed to cross continents in luxury, comfort and speed. It then became a class of racing car, GT1, GT3 etc. Those are the type of cars that should be in Gran Turismo, and cars that allow you to work up to them. I'll give you LMP/GrpC as those race/raced against GT cars.
In my opinion, GT should be about road cars, GT1/2/3/4/5 cars, Touring cars (DTM/Supertouring) and, as I said, I'll give you LMPs.
Formula cars do not fit in the Gran Turismo ethos, and if they are so important to it as some think, why did it take until game 3 for them to make an appearance?