A chute? Not all of us are drag racers.
The stopping power of the 11.75" rotors is a significant increase over the stock 10.98" rotors, as well as having better fade resistance for repeated braking (like with corners...). And it only takes a $100 set of caliper brackets and the rotors to do it, so why wouldn't you? When you start running 255 or wider tires in the front with modern rubber compounds the stock brakes start showing their weaknesses. Which is why you can now get everything up to and including 14" rotors for these cars. The 11.75's are a cheap, OE part way to improve your braking without having to get crazy spending oodles of money on brakes. And you can still run 15" rims.
The 275's on the front of my Challenger work the crap out of the 11.75" rotors I run on it, you can hear them straining to reel those big tires in when I get deep into the brakes, and it plants the nose of my Challenger even with 1.12" torsion bars. I can totally see why the road race guys go to bigger rotors than even the 11.75's.