Have done some research about the throttle response. As Bill stats above the Pentastar is a "drive-by-wire" throttle. The hesitation is the programming on the throttle, to avoid "sudden unwanted acceleration" (i.e. toyota) all manufactors are programming the throttle to ramp up with travel. So for example you open the throttle 10% but the computer only calls up 7%. Your foot and computer dont sink until approx. 70% throttle. The hesitation you feel when you jump on it from a dead stop (traction control engaged or not) is what Chrysler refers to as "torque management". This again is tied into the drive-by-wire system and is designed to protect the drive train from sudden torque. Drive a new hemi equipped Grand Cherokee and the hesitation is much worse than in the 200. Aftermarket companies have plug in accelerator pedal connector's that take the ramp out of the throttle and also disables the torque management, so you get the throttle you want when you want it without electronic baby sitters. I have contacted Sprint Booster and they are developing one for the Pentastar. Here is the link
http://www.sprintboosterusa.com/