I did think about buying a variable spring for the brake pedal, but it costs about £15ish from a quick look and out of pure stuborn stingyness that Logitech should have put one in, im not. Maybe if I can get one cheap on ebay I might
You ever driven a real life vehicle with hydraulic brakes? They don't have a 0-100% potentiometer with linear travel and resistance. The rubber block is a good approximation to the feel when the pads bite.
And while it gets harder, I can press it all the way down, and do so in a controlled manner.