What he Say Is true.
The only thing i don't agree Is about ffb,that in my opinion still sucks. I don't know If Is a problem with my wheel (t300 gt) or his firmware.
With my old g923 ffb was less annoying on this game,but was weaker and less qualitative on AC and ACC.
I finally made time to play, and yes... what he says is true! I can't overstate how important this trait is, not only because it's the way cars perform in the real world, but for how much this means for GT7's tire model and physics as a whole.
As far as FFB goes, my T300RS feels amazing! There is a much wider range of feedback, huge differences in force load between tire compounds/construction, and a lot more road surface/curbing detail is present. Didn't even have to change my settings (max torque 4, sensitivity 6), though I still may play around with them to see if any changes make it better even though I'm happy with it.
Overall the update is amazing, and brings a lot of great changes to the physics model. 4WD cars pull themselves on throttle instead of being tail happy like RWD cars. RWD cars can be managed in oversteer now, with lots of communication in opposite-lock and ability to modulate angle with the throttle, which I can't rave about enough. Rear-engine cars are WAAAY less prone to their tail coming around, and much more understeer is present on throttle, which makes finding and exploiting their balance so much fun. FWD cars (at least various Integras I have built) have lost that strange and annoying RWD character too, where they would be loose in the rear on throttle (which is an insane trait, and so unlike reality), and are now planted in a straight line on throttle. There still is less lift-throttle oversteer than I feel is lost, but it's still a great improvement over 1.30.
I found no issues with traction/understeer with the SC430 or 911 GR3 cars. Tire temps are more important, and cold tires don't like to be pushed, but when they're warm there is tons of grip and so much satisfying load building through the wheel when really pushing a slick-tire into slow speed corners.
Tires seems to be separate carcasses between models. Comforts are very squishy compared to the stiffer and more responsive sports, then moving up to race brings more lateral stiffness and response, along with deep amounts of traction and feedback.
The balance between over/understeer is much more delicate, and braking and compound traction limits are very defined. You can no longer bury cars in the brakes and expect to have a bunch of turn in too. I think a lot of people are struggling with finding this new balance due to being used to the less-correct previous model, and pass it off as "cars understeer now" while in truth the new balance is much better, and cars can be controlled as they are in the real world.
In general, everything I'm noticing brings us closer to realism when it comes to GT7 physics. There are still many things that can be improved, but I don't see any shortcomings compared to 1.30, and definitely don't agree with those that think this is a step backwards.