I noticed a lot of throttle lag when accelerating from a stop in the R/T I test drove friday. It did not seem normal, even for an electronic throttle (fly by wire), as my current vehicle has one as well, and there is minimal lag. If I end up buying it, I'll definitely have them reprogram the throttle position sensor.
Define a lot.
First thing I had to get used to was the amount of force needed to depress the throttle pedal. On mine, it seems to be about the same amount throughout pedal travel.
This is different than the '06 Mazda MX5 that I had with the electronic throttle. It was very easy to depress and increased in resistance the more you pressed it, mimicking a cable linkage setup better than the Nitro's.
Once you get used to the Nitro, you won't even notice it any longer.
Two, if you really get on it and the tires are slipping, the ESP system will actually slow down acceleration when your mind is thinking it should be going faster than it is. I have changed wheels and tires on mine. When I jump on it now, I actually hear the tires squealing on the pavement and see the rubber it leaves behind. The stock Goodyear's on the factory 20"s don't have good grip and make very little noise when they slip on pavement.
There is a switch on the center console marked ESP. If you press it in (look for the twin skid markes in the center of the instrument panel), you will partially turn off the traction control system. You can't completely disable it, but you should get better take off with the system turned off. Give it a try.