.
Admittedly, my spirited driving is limited to solo sessions - a small percentage of my stick time in this car.
And I'd guess better F/R proportioning would yield better braking, too, but I'd wager my car is set up like most of our cars are when first delivered and that most owners leave things that way. No matter how it's set, though, it's important to learn just where that limit of grip is. It's going to be less than on most modern cars, and there's no ABS to save you once you get there.
I'd also wager most owners use their cars about like I do - not expecting ultimate performance out of them. It's good to know how to improve things if that's what you want, but I think most of us aren't going there.
These cars can still be a lot of fun to drive, as is, and they can be gotten down a twisty bit of road quicker than they have any right doing - certainly a lot quicker than most Corolla or Crosstrek drivers will ever attempt.
For most of us, most of the time, EMPI brakes, properly set up, will do the job. If they're failing at that, they probably don't need to be replaced with more expensive gear, just looked after.