Nice patch, Scawen!
6600GT with 94.24 drivers here, no display problems whatsoever. The ambient shadows look very nice, too, and seem to be implemented in a way that is a good compromise between performance and realism.
The ABS is from my first impression pretty realistic and brings a LOT of stability to braking. The affected cars' brake setup will probably become pretty trivial from now on, considering how having a slightly off brake balance and strength don't seem to matter that much anymore. That said, I'm not sure how a real ABS system would handle a 2000Nm strength brake at 50% balance; my guess is it wouldn't handle it quite as well as the LFS implementation does (the car stays completely drivable).
What I think you have to be (and probably are) prepared for is a lot of whining regarding ABS. It will have a profound impact on how these cars are driven and as always when something
changes, whining ensues. I just hope that some people can see the good side of it, like it ultimately resulting in a better road car simulation as well as hopefully reducing T1 incidents a bit.