By crappy do you mean that it takes a lot of pedal travel to get going from a stop, and the final 25% all feels about the same? I have always wondered if you could adjust the exponential of the throttle curve.. Everything I have read in HP tuner forums (not a ton) said "Dont' mess with it!"
If you could adjust it it could get you more fine control, especially in cars without TC.
As an aside, if you want to feel crappy DBW response go drive a new GM truck or Tahoe/Suburban. Holy crap it is horrible, and really laggy. I am sure they did it for improved fuel economy for those that jab at the gas pedal, but it sucks.