I dont yet have the R but in all honesty I think it is a learning issue rather than a technical one.. I mean I own a 2 litre Subaru and I mean their entire range has nothing under the 2500 and 3000 rpm and then it kicks in with a rush. Now this is known and everyone learns how to use the top of the accelerator to smooth it in.
Again it learns your style of driving and you adapt to how it operates.. if the expectation is that you get low down grunt and a linear spread then go get a v8.. problem sorted..