FF only needs better clamming force in the front, rears are not require at all.. just better pads will be more than enough for FF application, it's also why brands like mugen, spoon sports, project mu, endless, buddy club, rotora, brembo, stoptech only offer upgrade for the front.
cars can always use better brake system. if i can shorten my 60-0 from 130ft to 110ft... why wouldn't i do it ? with current traffics & cellphones & text messages, better tires & better brakes are more important than ever.
if you can just avoid 1 fender bender, the bbk will pay for itself.. !
NOTE: when your on the track/auto-x, you use your brake to slow down the speed of the vehicle, it's very rare you need to slam the brake to stop the vehicle, it's very different than frequent stops for DD.