I gotta agree and at the same time disagree. For example my E21 used to be a 6 cylinder 2000 now I put in a 2700cc and the car is A LOT faster hence I see myself having to think beforehand when braking.
I understand big discs and such are for cooling but in my case I would love to have a bigger brake booster to help me out. So brakes do need to be improved if your car is faster in my opinion but not for cooling but for braking power. Unless you are taking it to the track....