My hope is that if 10.13 merges city streets with highway software that it won't cripple highway driving. FSDb on rural roads, in my car, isn't usable at all. I get it that I'm a beta tester and agree to living with its faults, but if pushing city streets software onto highway driving (which is finally quite good) ruins my main driving experience then I guess one remedy for that would be to opt out of beta.
I'm really getting tired of dealing with random hard braking. I never ever use beta when a car is behind me. I never attempt an intersection where I have to make a turn when a car is coming -- it often just stops dead in its tracks in the middle of the intersection. Crossing the center yellow line in a curve is another thing. I could go on, but I would think that the more critical problems would have been addressed by now. It's been a long time.
Oh, and let's not forget how often I am accused of not paying attention when I'm staring straight ahead at the asphalt. That's a new problem so they get a pass on that, for now.