My final thoughts on CSA, having read most of the thread and done my own testing at Brands, Gr3 on RH tyres.
Being 3rd is 3rd, aids or not.
Correct.
Other people using CSA doesn't effect you...
Incorrect imo, unless you play single player 100% of the time.
The main point of this game is online competition. If other people are using CSA and you're not, due to it's crazy overpowered nature, then it's having a very direct impact on your experience due to others being very artificially fast.
Should other people use it?
If they want to yes.
It is allowed, and while we can discuss and say we'd rather it wasn't, we can't sit there and say people shouldn't use it.
My thoughts
I don't like it, I think it should be removed for DR-B/A/S but it will be very handy for the lower DR levels I feel so it should remain optional there. Chances are people that are faster than me will remain faster than me with CSA off. It just means we're on a more level playing field. But by the same argument I could just wack CSA on strong and never have to worry about sliding or spinning out again, increasing my pace slightly but more importantly increasing my pace lap after lap after lap, due to mistakes being ironed out a lot quicker than I could of done and coming out of slow corners with it on results in a far better drive out. My perfect lap with CSA should be identical to my perfect lap without CSA, it doesn't really make you faster. It does however allow you to push so hard that almost every lap you do is very close to your perfect lap, with relative ease. The only drawback is you correcting slides it's correcting for you, but that can be learnt and adapted to very quickly.
I'm aware we all blissfully ignore how crazy ABS is, but it's a real thing, albeit overpowered, that has just been accepted as part of the GT ethos, due to it's extremely mental ABS-off behaviour almost everyone has it on. If none-abs braking was better I'd have it off too. ABS doesn't always keep the car stable either, MR car's have the rear sliding out on the brakes regularly, some FR cars tend to understeer heavily on the brakes too. Ultimately though I understand the hypocrisy here, but it is much different to CSA. Most of the CSA argument is some people hate how overpowered it is, then don't use it, which then results in an unfair playing field. Very nearly everyone has ABS on.