Can't say I'm unhappy with the acceleration under most circumstances; I'll pull it down into 'S' for an aggressive merge or a pass on a two lane, but hate to run it routinely in 'S' just in traffic.
For the most part, I've learned to compensate with a little more 'foot', but it does bug my wife when she drives...
And for the honor of BMW, I'd like to keep her quiet about her Audi....
Moon